diff --git a/bashplotlib/__init__.py b/bashplotlib/__init__.py
index e69de29..465b34f 100644
--- a/bashplotlib/__init__.py
+++ b/bashplotlib/__init__.py
@@ -0,0 +1,9 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*- 
+"""bashplotlib/__init__.py
+"""
+
+import os, sys
+
+PROJECT_ROOT = os.path.dirname(os.path.realpath(__file__))
+
diff --git a/bashplotlib/cli/__init__.py b/bashplotlib/cli/__init__.py
new file mode 100644
index 0000000..f8c7260
--- /dev/null
+++ b/bashplotlib/cli/__init__.py
@@ -0,0 +1,4 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*- 
+"""cli/__init__.py
+"""
diff --git a/bashplotlib/cli/demo.py b/bashplotlib/cli/demo.py
new file mode 100644
index 0000000..9dfda91
--- /dev/null
+++ b/bashplotlib/cli/demo.py
@@ -0,0 +1,26 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*- 
+"""demo.py
+"""
+import os, sys
+from bashplotlib.cli.hist import __doc__ as HIST_DOCSTRING
+from bashplotlib.core.histogram import plot_hist
+from bashplotlib import PROJECT_ROOT
+
+DATA_PATH = os.path.realpath(os.path.join(PROJECT_ROOT, '..', 'data'))
+
+if not os.path.exists(DATA_PATH):
+    sys.stderr.write('You need to download the example data set to run the demo...')
+    sys.stderr.write('try running `./examples/downloaddata.sh` to get the data')
+    sys.exit(1)
+
+def _hist_demo():
+    f = os.path.join(DATA_PATH, 'exp.txt')
+    print f
+    plot_hist(f)
+
+def run_demo(command):
+    if command == "hist":
+        _hist_demo()
+    elif command == "scatter":
+        raise NotImplementedError('`run_demo` is only implemented for `hist` cmd so far.')
diff --git a/bashplotlib/cli/helpers.py b/bashplotlib/cli/helpers.py
new file mode 100644
index 0000000..eba29aa
--- /dev/null
+++ b/bashplotlib/cli/helpers.py
@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*- 
+"""cli/helpers.py
+"""
+import sys, os
+from select import select
+
+def read_stdin_or_timeout():
+    """Try reading stdin. give up in 0.5s if nothing read yet."""
+    timeout = 0.5
+    rlist, _, _ = select([sys.stdin], [], [], timeout)
+    if rlist:
+        return sys.stdin.readlines()
+    else:
+        return None
+
diff --git a/bashplotlib/cli/hist.py b/bashplotlib/cli/hist.py
new file mode 100644
index 0000000..8214872
--- /dev/null
+++ b/bashplotlib/cli/hist.py
@@ -0,0 +1,56 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*- 
+"""hist - construct a histogram for a continuous variable from your terminal
+
+Usage:
+    hist [[FILE|-f FILENAME] -t TITLE -b BINS -s SIZE -p MARKERSHAPE -x XLAB -c COLOUR] [-n] [-h]
+
+Arguments:
+    FILE                              A file containing a column of numbers [default: stdin]
+    -f --file FILENAME                Same as FILE but shorter and less explicit [default: stdin]
+    -t --title TITLE                  Title for the chart [default: ]
+    -b --bins BINS                    Number of bins in the histogram [default: None]
+    -s --height SIZE                  Height of the histogram in lines [default: 20.0]
+    -p --pch MARKERSHAPE              Shape of each bar [default: o]
+    -x --xlab XLAB                    Label bins on x-axis [default: None]
+    -c --colour COLOUR                Colour of the plot (Pink, blue, green, red, white, aqua, grey, yellow) [default: white]
+
+Options:
+    -n --nosummary                    Hide summary
+    -h --help                         Show this screen
+
+Examples:
+    $ hist test.csv -t "you're the man now dog"
+    $ hist -f test.csv -t "you're the man now dog"
+    $ hist --file test.csv -t "you're the man now dog"
+    $ cat test.csv | hist -t "you're the man now dog"
+
+"""
+from docopt import docopt
+from bashplotlib.cli.helpers import read_stdin_or_timeout
+
+def parse_args():
+    """takes __doc__ for given cmd. Returns parsed args using docopt.
+    """
+    args = docopt(__doc__)
+    for k, v in args.iteritems():
+        if v == 'None':
+            args[k] = None
+    if args['FILE'] and args['FILE'] != args['--file']:
+        args['--file'] = args['FILE']
+    if args['--file'] == 'stdin':
+        args['--file'] = read_stdin_or_timeout()
+        if args['--file'] is None:
+            print __doc__
+            sys.exit(1)
+    plot_params = {
+        'bincount': args['--bins'],
+        'colour': args['--colour'],
+        'data': args['--file'],
+        'height': float(args['--height'].strip()),
+        'pch': args['--pch'],
+        'showSummary': (not args['--nosummary']),
+        'title': args['--title'],
+        'xlab': args['--xlab']
+    }
+    return plot_params
diff --git a/bashplotlib/cli/scatter.py b/bashplotlib/cli/scatter.py
new file mode 100644
index 0000000..37351f2
--- /dev/null
+++ b/bashplotlib/cli/scatter.py
@@ -0,0 +1,53 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*- 
+"""scatter
+
+Usage:
+    scatter ((FILE | -f FILENAME) | (-X XDATA -y YDATA)) [-t TITLE -s SIZE -p MARKERSHAPE -c COLOUR] [-h -H]
+
+Arguments:
+    FILE                              Csv with 2 columns for x and y [default: ]
+    -f --file FILENAME                Same as FILE but shorter and less explicit [default: ]
+    -X --xs-file XDATA                Text file with 1 column for the X values [default: ]
+    -y --ys-file YDATA                Text file with 1 column for the y values [default: ]
+    -t --title TITLE                  Title for the chart [default: ]
+    -s --size SIZE                    Height of the histogram in lines [default: 20.0]
+    -p --pch MARKERSHAPE              Shape of each bar [default: x]
+    -c --colour COLOUR                Colour of the plot (Pink, blue, green, red, white, aqua, grey, yellow) [default: white]
+    -H --skip-header                  Skip the first row in FILENAME, XDATA, and YDATA [default: False] 
+
+Options:
+    -h --help                         Show this screen
+
+Examples:
+    $ scatter2 -X data/exp.txt -y data/exp.txt
+
+"""
+from docopt import docopt
+from bashplotlib.cli.helpers import read_stdin_or_timeout
+
+def parse_args():
+    """takes __doc__ for given cmd. Returns parsed args using docopt.
+    """
+    args = docopt(__doc__)
+    for k, v in args.iteritems():
+        if v == 'None':
+            args[k] = None
+    if args['--file'] is None and (args['--xs-file'] is None or args['--ys-file'] is None):
+        print __doc__
+        sys.exit(1)
+    if args['FILE'] is not None or args['--file'] is not None:
+        if args['FILE'] and args['FILE'] != args['--file']:
+            args['--file'] = args['FILE']
+        if args['--file'] == 'stdin':
+            args['--file'] = read_stdin_or_timeout()
+    plot_params = {
+        'filename': args['--file'],
+        'xs': args['--xs-file'],
+        'ys': args['--ys-file'],
+        'size': float(args['--size']),
+        'pch': args['--pch'],
+        'colour': args['--colour'],
+        'title': args['--title'],
+    }
+    return {k: v for k,v in plot_params.items() if v is not None and v != ""}
diff --git a/bashplotlib/core/__init__.py b/bashplotlib/core/__init__.py
new file mode 100644
index 0000000..e0af725
--- /dev/null
+++ b/bashplotlib/core/__init__.py
@@ -0,0 +1,4 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*- 
+"""core/__init__.py
+"""
diff --git a/bashplotlib/core/helpers.py b/bashplotlib/core/helpers.py
new file mode 100644
index 0000000..846e39e
--- /dev/null
+++ b/bashplotlib/core/helpers.py
@@ -0,0 +1,110 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*- 
+"""core/helpers.py
+"""
+import os
+import sys
+import collections
+
+bcolours = {
+    "white": '\033[97m',
+    "aqua": '\033[96m',
+    "pink": '\033[95m',
+    "blue": '\033[94m',
+    "yellow": '\033[93m',
+    "green": '\033[92m',
+    "red": '\033[91m',
+    "grey": '\033[90m',
+    "ENDC": '\033[0m'
+}
+
+def isiterable(obj):
+    """
+    Return True if you can loop over obj otherwise False
+    """
+    return isinstance(obj, collections.Iterable)
+
+def get_colour(colour):
+    return bcolours.get(colour, bcolours['white'])
+
+def printcolour(text, sameline=False, colour=get_colour("ENDC")):
+    """
+    Print color text using escape codes
+    """
+    if sameline:
+        sep = ''
+    else:
+        sep = '\n'
+    sys.stdout.write(get_colour(colour) + text + bcolours["ENDC"] + sep)
+
+printcolor = printcolour
+
+def drange(start, stop, step=1.0):
+    "generate between 2 numbers w/ optional step"
+    if step==0:
+        step = 0.01
+    r = start
+    while r < stop:
+        yield r
+        r += step
+
+def box_text(text, width, offset=0):
+    box = " "*offset + "-"*(width+2) + "\n"
+    box += " "*offset + "|"+ text.center(width) + "|" + "\n"
+    box += " "*offset + "-"*(width+2)
+    return box
+
+def try_cast_str_to_number(number_str, verbose=False):
+    "takes txt and tries to coerce it to float"
+    try:
+        return float(number_str.strip())
+    except Exception, err:
+        if verbose:
+            sys.stderr.write(err.message)
+            sys.stderr.flush()
+        return None
+
+def read_xy_pairs_from_csv(filename, X=0, y=1, sep=',', header=False):
+    """Grab 2 columns from a csv file by name or col index
+    
+    Arguments:
+        filename        Name of the csv file to read
+        X               Index of the X column in the file [default: 0]
+        y               Index of the y column in the file [default: 0]
+        sep             Delimiter of the file [default: ,]
+        header          Does the file have headers in row #1 [default: False]
+
+    """
+    with open(filename, 'r') as f:
+        data = [line.strip() for line in f.readlines()]
+        data = [line.split(sep) for line in data]
+        data = [map(str.strip, row) for row in data]
+
+    if isinstance(X, int) and isinstance(y, int):
+        X_idx, y_idx = X, y
+    elif isinstance(X, basestring) and isinstance(y, basestring) \
+        and X.strip().isdigit() and y.strip().isdigit():
+        X_idx = int(try_cast_str_to_number(X))
+        y_idx = int(try_cast_str_to_number(y))
+    else:
+        X_idx, y_idx = None, None
+    X_y_pairs = []
+    for i, row in enumerate(data):
+        if i == 0 and header:
+            for j, col in enumerate(row):
+                if col.strip().lower() == X.strip().lower():
+                    X_idx = j
+                if col.strip().lower() == y.strip().lower():
+                    y_idx = j
+            if (X_idx is None or y_idx is None):
+                raise Exception("Column not found.")
+        try:
+            row = [try_cast_str_to_number(item) for item in row]
+            if row[0] and row[1]:
+                X_y_pairs.append(row)
+        except Exception, err:
+            pass
+    return X_y_pairs
+
+
+
diff --git a/bashplotlib/core/histogram.py b/bashplotlib/core/histogram.py
new file mode 100644
index 0000000..a102c2d
--- /dev/null
+++ b/bashplotlib/core/histogram.py
@@ -0,0 +1,123 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*- 
+"""histogram.py
+"""
+import math
+import sys
+import os
+from bashplotlib.core import helpers
+
+def calc_bins(n, min_val, max_val, h=None):
+    "calculate number of bins for the histogram"
+    if not h:
+        h = max(10, math.log(n + 1, 2)) 
+    bin_width = (max_val - min_val) / h
+    for b in helpers.drange(min_val, max_val, bin_width):
+        yield b
+
+def read_numbers(numbers):
+    "read input optimally; skip NA values. Takes a list() or a file."
+    if not numbers:
+        numbers = []
+    if isinstance(numbers, basestring):
+        try:
+            # read numbers from file
+            # ignore empty rows
+            numbers = [line for line in open(numbers, 'r') if line.strip()] 
+        except Exception, err:
+            pass
+    if helpers.isiterable(numbers):
+        for number in numbers:
+            number = helpers.try_cast_str_to_number(number)
+            if number:
+                yield number
+
+def plot_hist(data, height=20.0, bincount=None, pch="o", colour="white", title="", xlab=None, showSummary=False):
+    """make a histogram for continuous variable.
+
+        Arguments:
+            data:           List of numbers or file with numbers
+            height:         The height of the histogram in # of lines
+            bincount:       Number of bins in the histogram
+            pch:            Shape of the bars in the plot
+            colour:         Colour of the bars in the terminal
+            title:          Title at the top of the plot
+            xlab:           Boolen value for whether or not to display x-axis labels
+            showSummary:    Boolean value for whether or not to display a summary
+    """
+    if pch is None:
+        pch = "o"
+    colour = helpers.get_colour(colour)
+    min_val, max_val = None, None
+    n, mean = 0., 0.
+    for number in read_numbers(data):
+        n += 1
+
+        if not min_val or number < min_val:
+            min_val = number
+        if not max_val or number > max_val:
+            max_val = number
+        mean += number
+    mean /= n
+    bins = list(calc_bins(n, min_val, max_val, bincount))
+    hist = {}
+    for i in range(len(bins)):
+        hist[i] = 0
+    for number in read_numbers(data):
+        for i, b in enumerate(bins):
+            if number < b:
+                hist[i] += 1
+                break
+
+    min_y, max_y = min(hist.values()), max(hist.values())
+  
+    ys = list(helpers.drange(min_y, max_y, (max_y-min_y)/height))
+    ys.reverse()
+    
+    nlen = max(len(str(min_y)), len(str(max_y))) + 1
+    
+    if title:
+        print helpers.box_text(title, len(hist)*2, nlen)
+    print
+    used_labs = set()
+    for y in ys:
+        ylab = str(int(y))
+        if ylab in used_labs:
+            ylab = ""
+        else:
+            used_labs.add(ylab)
+        ylab = " "*(nlen - len(ylab)) + ylab + "|"
+
+        print ylab,
+
+        for i in range(len(hist)):
+            if y < hist[i]:
+                helpers.printcolor(pch, True, colour)
+            else:
+                helpers.printcolor(" ", True, colour)
+        print
+    xs = hist.keys() * 2
+    print " "*(nlen+1) + "-"*len(xs)
+    if xlab:
+        for i in range(0, nlen):
+            helpers.printcolor(" "*(nlen+1), True, colour)
+            for x in range(0, len(hist)):
+                num = str(bins[x])
+                if x%2==0:
+                    print " ",
+                elif i < len(num):
+                    print num[i],
+            print
+    center = max(map(len, map(str, [n, min_val, mean, max_val])))
+    center += 15
+    if showSummary:
+        print
+        print "-"*(2 + center)
+        print "|" + "Summary".center(center) + "|"
+        print "-"*(2 + center)
+        summary = "|" + ("observations: %d" % n).center(center) + "|\n"
+        summary += "|" + ("min value: %f" % min_val).center(center) + "|\n"
+        summary += "|" + ("mean : %f" % mean).center(center) + "|\n"
+        summary += "|" + ("max value: %f" % max_val).center(center) + "|\n"
+        summary += "-"*(2 + center)
+        print summary
diff --git a/bashplotlib/core/scatterplot.py b/bashplotlib/core/scatterplot.py
new file mode 100644
index 0000000..9271ed7
--- /dev/null
+++ b/bashplotlib/core/scatterplot.py
@@ -0,0 +1,79 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*- 
+"""scatterplot.py
+"""
+from __future__ import print_function
+import sys
+import os
+from bashplotlib.core import helpers
+
+def get_scale(series, is_y=False, steps=20):
+    try:
+        min_val = min(series)
+        max_val = max(series)
+        scaled_series = []
+        for x in helpers.drange(min_val, max_val, (max_val-min_val)/steps):
+            if x > 0 and scaled_series and max(scaled_series) < 0:
+                scaled_series.append(0.0)
+            scaled_series.append(x)
+        if is_y:
+            scaled_series.reverse()
+        return scaled_series
+    except Exception, err:
+        print(err)
+        # print(series)
+        print(is_y)
+        print(steps)
+
+def plot_scatter(filename=None, xs=None, ys=None, size=20, pch='x', colour='white', title=None, skipheader=False):
+    """plot (X,y) pairs from columns in a file or 2 separate files
+    
+        Arguments:
+            xs                   List of values to use on X axis [default: None]
+            ys                   List of values to use on y axis [default: None]
+            filename             Name of a csv file [default: None]
+            skipheader           Skip the first row [default: False]
+            size                 Marketsize [default: 20]
+            pch                  Markershape [default: x]
+            colour               Marker colour [default: white]
+            title                Title [default: ]
+
+    """
+
+    if filename:
+        data = helpers.read_xy_pairs_from_csv(filename, X=0, y=1, header=skipheader)
+        xs = [i[0] for i in data]
+        ys = [i[1] for i in data]
+    else:
+        xs = [line.strip() for line in open(xs, 'r').readlines()]
+        ys = [line.strip() for line in open(ys, 'r').readlines()]
+        if skipheader:
+            xs = xs[1:]
+            ys = ys[1:]
+        xs = map(float, xs)
+        ys = map(float, ys)
+    if (xs is None or ys is None):
+        raise Exception("Missing `xs` or `ys` data.")
+    plotted = set()
+    if title:
+        print(helpers.box_text(title, 2 * len(get_scale(xs, False, size)) + 1))
+
+    print("-" * (2 * len(get_scale(xs, False, size)) + 2))
+    for y in get_scale(ys, True, size):
+        print("|", end=' ')
+        for x in get_scale(xs, False, size):
+            point = " "
+            for (i, (xp, yp)) in enumerate(zip(xs, ys)):
+                if xp <= x and yp >= y and (xp, yp) not in plotted:
+                    point = pch
+                    #point = str(i)
+                    plotted.add((xp, yp))
+            if x == 0 and y == 0:
+                point = "o"
+            elif x == 0:
+                point = "|"
+            elif y == 0:
+                point = "-"
+            helpers.printcolour(point, True, colour)
+        print("|")
+    print("-" * (2 * len(get_scale(xs, False, size)) + 2))
diff --git a/bashplotlib/histogram.py b/bashplotlib/histogram.py
deleted file mode 100644
index 2041d4a..0000000
--- a/bashplotlib/histogram.py
+++ /dev/null
@@ -1,184 +0,0 @@
-#!/usr/bin/python
-import math
-import optparse
-import sys
-from utils.helpers import *
-from utils.commandhelp import hist
-
-def calc_bins(n, min_val, max_val, h=None):
-    "calculate number of bins for the histogram"
-    if not h:
-        h = max(10, math.log(n + 1, 2)) 
-    bin_width = (max_val - min_val) / h
-    for b in drange(min_val, max_val, bin_width):
-        yield b
-
-def read_numbers(numbers):
-    "read the input data in the most optimal way"
-    if isinstance(numbers, list):
-        for n in numbers:
-            n = str(n)
-            yield float(n.strip())
-    else:
-        for n in open(numbers):
-            yield float(n.strip())
-
-def run_demo():
-    "demo the product"
-    #plotting a histogram
-    print "plotting a basic histogram"
-    print "plot_hist('./data/exp.txt')"
-    print "hist -f ./data/exp.txt"
-    print "cat ./data/exp.txt | hist"
-    plot_hist('./data/exp.txt')
-    print "*"*80
-    #with colors
-    print "histogram with colors"
-    print "plot_hist('./data/exp.txt', colour='blue')"
-    print "hist -f ./data/exp.txt -c blue"
-    plot_hist('./data/exp.txt', colour='blue')
-    print "*"*80
-    #changing the shape of the point
-    print "changing the shape of the bars"
-    print "plot_hist('./data/exp.txt', pch='.')"
-    print "hist -f ./data/exp.txt -p ."
-    plot_hist('./data/exp.txt', pch='.')
-    print "*"*80
-    #chagning the size of the plot
-    print "chagning the size of the plot"
-    print "plot_hist('./data/exp.txt', height=35.0, bincount=40)"
-    print "hist -f ./data/exp.txt -s 35.0 -b 40"
-    plot_hist('./data/exp.txt', height=35.0, bincount=40)
-
-def plot_hist(f, height=20.0, bincount=None, pch="o", colour="white", title="", xlab=None, showSummary=False):
-    """make a histogram
-
-        Keyword arguments:
-        height -- the height of the histogram in # of lines
-        bincount -- number of bins in the histogram
-        pch -- shape of the bars in the plot
-        colour -- colour of the bars in the terminal
-        title -- title at the top of the plot
-        xlab -- boolen value for whether or not to display x-axis labels
-        showSummary -- boolean value for whether or not to display a summary
-    """
-    
-    if pch is None:
-        pch = "o"
-    
-    colour = get_colour(colour)
-
-    min_val, max_val = None, None
-    n, mean = 0., 0.
-    for number in read_numbers(f):
-        n += 1
-
-        if not min_val or number < min_val:
-            min_val = number
-        if not max_val or number > max_val:
-            max_val = number
-        mean += number
-    mean /= n
-
-    bins = list(calc_bins(n, min_val, max_val, bincount))
-    hist = {}
-    for i in range(len(bins)):
-        hist[i] = 0
-    for number in read_numbers(f):
-        for i, b in enumerate(bins):
-            if number < b:
-                hist[i] += 1
-                break
-
-    min_y, max_y = min(hist.values()), max(hist.values())
-  
-    ys = list(drange(min_y, max_y, (max_y-min_y)/height))
-    ys.reverse()
-    
-    nlen = max(len(str(min_y)), len(str(max_y))) + 1
-    
-    if title:
-        print box_text(title, len(hist)*2, nlen)
-    print
-    used_labs = set()
-    for y in ys:
-        ylab = str(int(y))
-        if ylab in used_labs:
-            ylab = ""
-        else:
-            used_labs.add(ylab)
-        ylab = " "*(nlen - len(ylab)) + ylab + "|"
-
-        print ylab,
-
-        for i in range(len(hist)):
-            if y < hist[i]:
-                printcolor(pch, True, colour)
-            else:
-                printcolor(" ", True, colour)
-        print
-    xs = hist.keys() * 2
-
-    print " "*(nlen+1) + "-"*len(xs)
-
-
-    if xlab:
-        for i in range(0, nlen):
-            printcolor(" "*(nlen+1), True, colour)
-            for x in range(0, len(hist)):
-                num = str(bins[x])
-                if x%2==0:
-                    print " ",
-                elif i < len(num):
-                    print num[i],
-            print
-    center = max(map(len, map(str, [n, min_val, mean, max_val])))
-    center += 15
-    
-    if showSummary:
-        print
-        print "-"*(2 + center)
-        print "|" + "Summary".center(center) + "|"
-        print "-"*(2 + center)
-        summary = "|" + ("observations: %d" % n).center(center) + "|\n"
-        summary += "|" + ("min value: %f" % min_val).center(center) + "|\n"
-        summary += "|" + ("mean : %f" % mean).center(center) + "|\n"
-        summary += "|" + ("max value: %f" % max_val).center(center) + "|\n"
-        summary += "-"*(2 + center)
-        print summary
-
-
-if __name__=="__main__":
-
-    parser = optparse.OptionParser(usage=hist['usage'])
-
-    parser.add_option('-f', '--file', help='a file containing a column of numbers',
-                      default=None, dest='f')
-    parser.add_option('-t', '--title', help='title for the chart',
-                      default="", dest='t')
-    parser.add_option('-b', '--bins', help='number of bins in the histogram',
-                      type='int', default=None, dest='b')
-    parser.add_option('-s', '--height', help='height of the histogram (in lines)',
-                      type='int', default=20., dest='h')
-    parser.add_option('-p', '--pch', help='shape of each bar', default='o', dest='p')
-    parser.add_option('-x', '--xlab', help='label bins on x-axis', default=None, action="store_true", dest='x')
-    parser.add_option('-c', '--colour', help='colour of the plot (%s)' % ", ".join([c for c in bcolours.keys() if c != 'ENDC']),
-                      default='white', dest='colour')
-    parser.add_option('-d', '--demo', help='run demos', action='store_true', dest='demo')
-    parser.add_option('-n', '--nosummary', help='hide summary', action='store_false', dest='showSummary', default=True)
-
-    (opts, args) = parser.parse_args()
-
-    if opts.f is None:
-        if len(args) > 0:
-            opts.f = args[0]
-        elif opts.demo is False:
-            opts.f = sys.stdin.readlines()
-
-    if opts.demo:
-        run_demo()
-    elif opts.f:
-        plot_hist(opts.f, opts.h, opts.b, opts.p, opts.colour, opts.t, opts.x, opts.showSummary)
-    else:
-        print "nothing to plot!"
-
diff --git a/bashplotlib/scatterplot.py b/bashplotlib/scatterplot.py
deleted file mode 100644
index db4a38e..0000000
--- a/bashplotlib/scatterplot.py
+++ /dev/null
@@ -1,101 +0,0 @@
-#!/usr/bin/python
-import csv
-import optparse
-import sys
-from utils.helpers import *
-from utils.commandhelp import scatter 
-
-
-def get_scale(series, is_y=False, steps=20):
-    min_val = min(series)
-    max_val = max(series)
-    scaled_series = []
-    for x in drange(min_val, max_val, (max_val-min_val)/steps):
-        if x > 0 and scaled_series and max(scaled_series) < 0:
-            scaled_series.append(0.0)
-        scaled_series.append(x)
-    
-    if is_y:
-        scaled_series.reverse()
-    return scaled_series
-
-def plot_scatter(f, xs, ys, size, pch, colour, title):
-    """Form a complex number.
-    
-        Arguments:
-        f -- comma delimited file w/ x,y coordinates
-        xs -- if f not specified this is a file w/ x coordinates
-        ys -- if f not specified this is a filew / y coordinates
-        size -- size of the plot
-        pch -- shape of the points (any character)
-        colour -- colour of the points
-        title -- title of the plot 
-    """
-    
-    if f:
-        if isinstance(f, str):
-            f = open(f)
-        
-        data = [tuple(map(float, line.strip().split(','))) for line in f]
-        xs = [i[0] for i in data]
-        ys = [i[1] for i in data]
-    else:
-        xs = [float(str(row).strip()) for row in open(xs)]
-        ys = [float(str(row).strip()) for row in open(ys)]
-
-    colour = get_colour(colour)
-
-    plotted = set()
-    
-    if title:
-        print box_text(title, 2*len(get_scale(xs, False, size))+1)
-    
-    print "-"*(2*len(get_scale(xs, False, size))+2)
-    for y in get_scale(ys, True, size):
-        print "|",
-        for x in get_scale(xs, False, size):
-            point = " "
-            for (i, (xp, yp)) in enumerate(zip(xs, ys)):
-                if xp <= x and yp >= y and (xp, yp) not in plotted:
-                    point = pch
-                    #point = str(i) 
-                    plotted.add((xp, yp))
-            if x==0 and y==0:
-                point = "o"
-            elif x==0:
-                point = "|"
-            elif y==0:
-                point = "-"
-            printcolor(point, True, colour)
-        print "|"
-    print "-"*(2*len(get_scale(xs, False, size))+2)
-
-
-if __name__=="__main__":
-
-    parser = optparse.OptionParser(usage=scatter['usage'])
-    parser.add_option('-f', '--file', help='a csv w/ x and y coordinates',
-                      default=None, dest='f')
-    parser.add_option('-t', '--title', help='title for the chart',
-                          default="", dest='t')
-    parser.add_option('-x', help='x coordinates',
-                      default=None, dest='x')
-    parser.add_option('-y', help='y coordinates',
-                      default=None, dest='y')
-    parser.add_option('-s', '--size',help='y coordinates',
-                      default=20, dest='size', type='int')
-    parser.add_option('-p', '--pch',help='shape of point',
-                      default="x", dest='pch') 
-    parser.add_option('-c', '--colour', help='colour of the plot (%s)' % ", ".join(bcolours.keys()),
-                      default='white', dest='colour')
-
-    (opts, args) = parser.parse_args()
-
-    if opts.f is None and (opts.x is None or opts.y is None):
-        opts.f = sys.stdin.readlines()
-
-    if opts.f or (opts.x and opts.y):
-        plot_scatter(opts.f, opts.x, opts.y, opts.size, opts.pch, opts.colour, opts.t)
-    else:
-        print "nothing to plot!"
-
diff --git a/bashplotlib/utils/__init__.py b/bashplotlib/utils/__init__.py
deleted file mode 100644
index e69de29..0000000
diff --git a/bashplotlib/utils/commandhelp.py b/bashplotlib/utils/commandhelp.py
deleted file mode 100644
index 8670563..0000000
--- a/bashplotlib/utils/commandhelp.py
+++ /dev/null
@@ -1,24 +0,0 @@
-
-hist = {
-    "usage": """hist is a command for making histograms. it accepts a series of values in one of the following formats:
-        1) txt file w/ 1 column of numbers
-        2) standard in piped from another command line cat or curl    
-    
-    for some examples of how to use hist, you can type the command:
-        hist --demo
-    or visit https://github.com/glamp/bashplotlib/blob/master/examples/sample.sh
-    """
-}
-
-scatter = {
-    "usage": """scatterplot is a command for making xy plots. it accepts a series of x values and a series of y values in the 
-    following formats:
-        1) a txt file or standard in value w/ 2 comma seperated columns of x,y values
-        2) 2 txt files. 1 w/ designated x values and another with designated y values.
-    
-    scatter -x <xcoords> -y <ycoords>
-    cat <file_with_x_and_y_coords> | scatter
-
-    """
-}
-
diff --git a/bashplotlib/utils/helpers.py b/bashplotlib/utils/helpers.py
deleted file mode 100644
index ffe0176..0000000
--- a/bashplotlib/utils/helpers.py
+++ /dev/null
@@ -1,45 +0,0 @@
-
-
-bcolours = {
-    "white": '\033[97m',
-    "aqua": '\033[96m',
-    "pink": '\033[95m',
-    "blue": '\033[94m',
-    "yellow": '\033[93m',
-    "green": '\033[92m',
-    "red": '\033[91m',
-    "grey": '\033[90m',
-    "ENDC": '\033[0m'
-}
-
-def get_colour(colour):
-    return bcolours.get(colour, bcolours['white'])
-
-def printcolor(txt, sameline=False, color=get_colour("white")):
-    if sameline:
-        if color=='\033[97m':
-            print txt,
-        else:
-            print color + txt + bcolours["ENDC"],
-    else:
-        if color=='\033[97m':
-            print txt
-        else:
-            print color + txt + bcolours["ENDC"]
-
-def drange(start, stop, step=1.0):
-    "generate between 2 numbers w/ optional step"
-    if step==0:
-        step = 0.01
-    r = start
-    while r < stop:
-        yield r
-        r += step
-
-def box_text(text, width, offset=0):
-    box = " "*offset + "-"*(width+2) + "\n"
-    box += " "*offset + "|"+ text.center(width) + "|" + "\n"
-    box += " "*offset + "-"*(width+2)
-    return box
-
-
diff --git a/bin/hist b/bin/hist
index 24bf9c9..753b31d 100755
--- a/bin/hist
+++ b/bin/hist
@@ -1,39 +1,13 @@
 #!/usr/bin/env python
-import optparse
-import sys
-from bashplotlib.utils.commandhelp import hist
-from bashplotlib.utils.helpers import *
-from bashplotlib.histogram import plot_hist
-
-
-if __name__=="__main__":
-
-    parser = optparse.OptionParser(usage=hist['usage'])
-
-    parser.add_option('-f', '--file', help='a file containing a column of numbers',
-                      default=None, dest='f')
-    parser.add_option('-t', '--title', help='title for the chart',
-                      default="", dest='t')
-    parser.add_option('-b', '--bins', help='number of bins in the histogram',
-                      type='int', default=None, dest='b')
-    parser.add_option('-s', '--height', help='height of the histogram (in lines)',
-                      type='int', default=20., dest='h')
-    parser.add_option('-p', '--pch', help='shape of each bar', default='o', dest='p')
-    parser.add_option('-x', '--xlab', help='label bins on x-axis', default=None, action="store_true", dest='x')
-    parser.add_option('-c', '--colour', help='colour of the plot (%s)' % ", ".join([c for c in bcolours.keys() if c != 'ENDC']),
-                      default='white', dest='colour')
-    parser.add_option('-n', '--nosummary', help='hide summary', action='store_false', dest='showSummary', default=True)
-
-    (opts, args) = parser.parse_args()
-    
-    if opts.f is None:
-        if len(args) > 0:
-            opts.f = args[0]
-        else:
-            opts.f = sys.stdin.readlines()
-
-    if opts.f:
-        plot_hist(opts.f, opts.h, opts.b, opts.p, opts.colour, opts.t, opts.x, opts.showSummary)
-    else:
-        print "nothing to plot!"
-
+# -*- coding: utf-8 -*- 
+import os, sys
+from bashplotlib.cli.hist import __doc__
+from bashplotlib.cli.hist import parse_args
+from bashplotlib.core.histogram import plot_hist
+
+def main():
+    plot_params = parse_args()
+    plot_hist(**plot_params)
+
+if __name__ == "__main__":
+    main()
diff --git a/bin/scatter b/bin/scatter
index 03ff87f..99b09d1 100755
--- a/bin/scatter
+++ b/bin/scatter
@@ -1,37 +1,14 @@
 #!/usr/bin/env python
-import csv
-import optparse
+# -*- coding: utf-8 -*- 
+import os
 import sys
-from bashplotlib.utils.helpers import *
-from bashplotlib.utils.commandhelp import scatter
-from bashplotlib.scatterplot import plot_scatter
+from bashplotlib.cli.scatter import __doc__
+from bashplotlib.cli.scatter import parse_args
+from bashplotlib.core.scatterplot import plot_scatter
 
+def main():
+    plot_params = parse_args()
+    plot_scatter(**plot_params)
 
-if __name__=='__main__':
-
-    parser = optparse.OptionParser(usage=scatter['usage'])
-    parser.add_option('-f', '--file', help='a csv w/ x and y coordinates',
-                      default=None, dest='f')
-    parser.add_option('-t', '--title', help='title for the chart',
-                          default='', dest='t')
-    parser.add_option('-x', help='x coordinates',
-                      default=None, dest='x')
-    parser.add_option('-y', help='y coordinates',
-                      default=None, dest='y')
-    parser.add_option('-s', '--size',help='y coordinates',
-                      default=20, dest='size', type='int')
-    parser.add_option('-p', '--pch',help='shape of point',
-                      default='x', dest='pch')
-    parser.add_option('-c', '--colour', help='colour of the plot (%s)' % ', '.join(bcolours.keys()),
-                      default='white', dest='colour')
-
-    (opts, args) = parser.parse_args()
-
-    if opts.f is None and (opts.x is None or opts.y is None):
-        opts.f = sys.stdin.readlines()
-
-    if opts.f or (opts.x and opts.y):
-        plot_scatter(opts.f, opts.x, opts.y, opts.size, opts.pch, opts.colour, opts.t)
-    else:
-        print "nothing to plot!"
-
+if __name__ == "__main__":
+    main()
diff --git a/data/xydata-headers.csv b/data/xydata-headers.csv
new file mode 100644
index 0000000..89a85f8
--- /dev/null
+++ b/data/xydata-headers.csv
@@ -0,0 +1,1000 @@
+X,y
+153,1000.80640058
+276,999.55591434
+63,1000.1673557
+565,999.532308126
+76,1000.56610764
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diff --git a/data/xydata.csv b/data/xydata.csv
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