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PlotPub
Publication quality graphs in MATLAB.
MATLAB is an excellent tool. It is equally popular among students, researchers
and professors. If you use MATLAB for your project/research, you probably know
that it is not easy to create publication quality graphs (PQGs) using MATLAB.
You will have to call a billion set and get functions
to create a decent plot with desired height, width, fonts, line width, color
etc. Here, I present PlotPub which is a collection of MATLAB functions and
a MATLAB class that allows you to modify almost all aspects of MATLAB figures
and export PQGs using one function call and a simple structure.
What's new in v2.2
Added SVG and fig to exports (issue # 9). Thanks to Hythem Sidky
Fixed constructor for user supplied handle. Thanks to
Hythem Sidky.
<li>Added a new function, <code>setPlotProp2(hfig, opt)</code>
for compatibility with MATLAB line and patch functions.</li>
New features of v2.x
Simple and elegant object oriented approach: all aspects of the MATLAB
figure is encapsulated in the Plot class.
Create new plots, open saved figures or change existing figure using
the same call, Plot().
Control every aspect of a MATLAB figure using the Plot class object.
Property changes are immediately visible, useful when using from command
window.
Even easier to use.
Fully compatible to v1.x.
What's new in v1.4
Added the title option.
What's new in v1.3
Several bugs fixed including marker spacing.
New options for axis color, axis line width, tick direction, tick
length, minor ticks, legend box, legend text color etc.
New, more appealing default look.
Features of v1.x
Generate beautiful, publication quality graphs from instantly generated
MATLAB figures or saved MATLAB fig files.
Export figures in EPS, PDF, JPEG, PNG and TIFF with adjustable
resolution.
Set marker spacing.
Change almost all aspects of a figure using simple and intuitive
code.
A lot of example codes. A decent tutorial and good documentation.
Tested in Ubuntu and OSX with MATLAB 7.10. But it should work in other
operating systems with other versions of MATLAB.
Distributed under BSD license which allows you to do anything you
like.
Compatibility with v1.1
In version 1.2, I introduced a new function setPlotProp which is
superior to the old function plotPub. But for backward
compatibility, plotPub is still available in v1.2. Therefore, all
of your previous codes should work with v1.2.
Download and extract the zip file from the link given above. Install PlotPub
using any one of the three possible ways: (1) copy all the *.m files inside
the lib folder to either your MATLAB path or (2) copy those files
to your current project folder or (3) put plotPub-master in any convenient
folder and add the following line in your MATLAB code:
addpath('D:/MATLAB/PlotPub-master/lib');
where, I assume that you put PlotPub-master in D:/MATLAB folder.
The sample codes can be found inside the examples folder.
To create a beautiful figure using PlotPub, all you need to know is how to use
the (Plot) class. Alternatively, you can use the
set-plot-properties (setPlotProp) function which
is discussed here.
The Plot class provides a simple and elegant object oriented programming
interface for manipulating MATLAB figures.
Let us walk you through an example. Assume that we have data for 3 cycle of a
50 Hz AC voltage signal:
clearall;
%%lets plot 3 cycles of 50Hz AC voltage
f =50; % frequency
Vm =10; % peak
phi =0; % phase% generate the signal
t = [0:0.0001:3/f];
th =2*pi*f*t;
v =Vm*sin(th+phi);
% plot itfigure;
plot(t*1E3, v);
where, f is the frequency, Vm is the peak voltage,
t is time and v is the AC voltage signal. Result?
An utterly ugly looking figure punching at your face:
Now, let us add some spices. Let us set the labels and title:
% change settings
plt =Plot(); % create a Plot object and grab the current figure
plt.XLabel ='Time, t (ms)'; % xlabel
plt.YLabel ='Voltage, V (V)'; %ylabel
plt.Title ='Voltage as a function of time'; % plot title
Finally, call the export function to export the figure:
% Save? comment the following line if you do not want to saveplt.export('plotSimple1.png');
The resulting plot should look like:
Instead of creating the plot using
% plot itfigure;
plot(t*1E3, v);
one could also use Plot class directly to plot:
plt =Plot(t*1E3, v); % create the figure directly using data
plt.XLabel ='Time, t (ms)'; % xlabel
plt.YLabel ='Voltage, V (V)'; %ylabel
plt.Title ='Voltage as a function of time'; % plot title
The full source code for this plot, plotSimple.m, can be found
inside the examples_class folder.
See plotSimpleLog.m and plotSimpleLogLog.m for full
source code.
Creating multiple plots in a single set of axes is also easy:
% generate the signal
t = [0:0.0001:3/f];
th =2*pi*f*t;
v1 =Vm*sin(th);
v2 =Vm*sin(th-phi);
v3 =Vm*sin(th-phi*2);
% plot them
plt =Plot(t*1E3, v1, t*1E3, v2, t*1E3, v3);
% change settings
plt.XLabel ='Time, t (ms)'; % xlabel
plt.YLabel ='Voltage, V (V)'; % ylabel
plt.YTick = [-10, 0, 10]; % [tick1, tick2, .. ]
plt.YLim = [-11, 11]; % [min, max]% Save? comment the following line if you do not want to saveplt.export('plotMultiple.tiff');
Note how Plot class constructor is directly used for plotting multiple
functions. Result:
The full source is given in plotMultiple.m. We can change the
linestyle, color etc and add a legend:
plt.XLim = [0, 80]; % [min, max]
plt.Colors = { % three colors for three data set
[1, 0, 0] % data set 1
[0.25, 0.25, 0.25] % data set 2
[0, 0, 1] % data set 3
};
plt.LineWidth = [2, 2, 2]; % three line widths
plt.LineStyle = {'-', '-', '-'}; % three line styles
plt.Markers = {'o', '', 's'};
plt.MarkerSpacing = [15, 15, 15];
plt.Legend = {'\theta = 0^o', '\theta = 45^o', '\theta = 90^o'}; % legends
Here, plt.Colors{1}, plt.LineWidth(1) and
plt.LineStyle{1} set properties of data set 1 and so on.
The full source is given in plotMarkers.m.
By default, PlotPub creates figures with 6in x 3in box size. You
can easily change the figure size using the following code.
plt.BoxDim = [7, 3]; %[width, height] in inches
This code creates a figure with 7in x 5in box.
See plotSize.m for more details.
You can also load a previously saved MATLAB fig file and export it using
Plot class:
clearall;
% load previously generated fig file
plt =Plot('single.fig');
% change settings
plt.XLabel ='Time, t (ms)'; % xlabel
plt.YLabel ='Voltage, V (V)'; %ylabel
plt.BoxDim = [6, 5]; %[width, height]% Save? comment the following line if you do not want to saveplt.export('plotSize.png');
Given bellow is a brief description of the Plot class and
setPlotProp and plotPub functions and their
parameters. This documents can also be viewed by invoking:
>> helpPlot
>> helpsetPlotProp
from inside the MATLAB command window.
Plot class
This class represents a MATLAB figure. It can create new plots, open
saved figure files and change properties of opened/existing figures.
It can also export figures as publication quality image files.
The resolution of the image can be changed by the user. Supported image
formats are EPS, PDF, PNG, JPEG and TIFF. The figure properties can be
changed by easy-to-remember class properties.
Constructors:
Plot()
% Grabs the current figure.Plot(handle)
% Grabs the figure pointed by handle.Plot('filename.fig')
% Opens the figure file ('filename.fig') and use the opened figure.Plot(handle, holdLine)
% Grabs the figure pointed by handle. If holdLine = true, it does not % change the plot properties.Plot(Y)
% Plots Y where Y must be a vector.Plot(X, Y)
% Plots Y vs X. Both X and Y must be vectors.Plot(X1, Y1, X2, Y2, ...)% Plots Y's vs X's. X's and Y's must be vectors.
The constructors return plot objects which can be used for subsequent property
changes.
Properties:
BoxDim% vector [width, height]: size of the axes box in inches; % default: [6, 2.5]ShowBox% 'on' = show or 'off' = hide bounding boxFontName% string: font name; default: 'Helvetica'FontSize% integer; default: 26LineWidth% vector [width1, width2, ..]: element i changes the % property of i-th dataset; default: 2LineStyle% cell array {'style1', 'style2', ..}: element i changes % the property of i-th dataset; default: '-'LineCount% Number of plots (readonly)Markers% cell array {'marker1', 'marker2', ..}: element i changes % the property of i-th dataset; default: 'None'MarkerSpacing% vector [space1, space2, ..]: element i changes the % property of i-th dataset; default: 0Colors% 3xN matrix, [red, green, blue] where N is the number of % datasets.AxisColor% axis color, [red, green, blue]; default black.AxisLineWidth% axis line width, number; default 2.XLabel% X axis labelYLabel% Y axis labelZLabel% Z axis labelXTick% [tick1, tick2, ..]: major ticks for X axis.YTick% [tick1, tick2, ..]: major ticks for Y axis.ZTick% [tick1, tick2, ..]: major ticks for Z axis.XMinorTick% 'on' or 'off': show X minor tick?YMinorTick% 'on' or 'off': show Y minor tick?ZMinorTick% 'on' or 'off': show Z minor tick?TickDir% tick direction: 'in' or 'out'; default: 'in'TickLength% tick length; default: [0.02, 0.02]XLim% [min, max]: X axis limit.YLim% [min, max]: Y axis limit.ZLim% [min, max]: Z axis limit.XScale% 'linear' or 'log': X axis scale.YScale% 'linear' or 'log': Y axis scale.ZScale% 'linear' or 'log': Z axis scale.XGrid% 'on' or 'off': show grid in X axis?YGrid% 'on' or 'off': show grid in Y axis?ZGrid% 'on' or 'off': show grid in Z axis?XDir% 'in' or 'out': X axis tick directionYDir% 'in' or 'out': Y axis tick directionZDir% 'in' or 'out': Z axis tick directionLegend% {'legend1','legend2',...}LegendBox% bounding box of legend: 'on'/'off'; default: 'off'LegendBoxColor% color of the bounding box of legend; default: 'none'LegendTextColor% color of the legend text; default: [0,0,0]LegendLoc% 'NorthEast', ..., 'SouthWest': legend locationTitle% plot title, stringResolution% Resolution (dpi) for bitmapped file. Default:600.HoldLines% true/false. true == only modify axes settings, do not % touch plot lines/surfaces. Default false.
function h = setPlotProp(opt, hfig)
This function changes the properties of the figure represented by 'hfig' and
exports it as a publication quality image file. The resolution of the image can
be chosen by the user. Supported image formats are EPS, PDF, PNG, JPEG and TIFF.
The figure properties are specified by the options structure 'opt'.
Parameters:
opt% options structure:BoxDim% vector [width, height]: size of the axes box in inches; default: [6, 2.5]ShowBox% 'on' = show or 'off' = hide bounding box; default: 'on'FontName% string: font name; default: 'Arial'FontSize% integer; default: 26LineWidth% vector [width1, width2, ..]: element i changes the property of i-th dataset; default: 2LineStyle% cell array {'style1', 'style2', ..}: element i changes the property of i-th dataset; default: '-'Markers% cell array {'marker1', 'marker2', ..}: element i changes the property of i-th dataset; default: 'None'MarkerSpacing% vector [space1, space2, ..]: element i changes the property of i-th dataset; default: 0Colors% 3xN matrix, [red, green, blue] where N is the number of datasets.AxisColor% [red, green, blue]; color of the axis lines; default: blackAxisLineWidth% Witdth of the axis lines; default: 2XLabel% X axis labelYLabel% Y axis labelZLabel% Z axis labelXTick% [tick1, tick2, ..]: major ticks for X axis.YTick% [tick1, tick2, ..]: major ticks for Y axis.ZTick% [tick1, tick2, ..]: major ticks for Z axis.XMinorTick% 'on' or 'off': show X minor tick?YMinorTick% 'on' or 'off': show Y minor tick?ZMinorTick% 'on' or 'off': show Z minor tick?TickDir% tick direction: 'in' or 'out'; default: 'in'TickLength% tick length; default: [0.02, 0.02]XLim% [min, max]: X axis limit.YLim% [min, max]: Y axis limit.ZLim% [min, max]: Z axis limit.XScale% 'linear' or 'log': X axis scale.YScale% 'linear' or 'log': Y axis scale.ZScale% 'linear' or 'log': Z axis scale.XGrid% 'on' or 'off': show grid in X axis?YGrid% 'on' or 'off': show grid in Y axis?ZGrid% 'on' or 'off': show grid in Z axis?XDir% 'in' or 'out': X axis tick directionYDir% 'in' or 'out': Y axis tick directionZDir% 'in' or 'out': Z axis tick directionLegend% {'legend1','legend2',...}LegendBox% bounding box of legend: 'on'/'off'; default: 'off'LegendBoxColor% color of the bounding box of legend; default: 'none'LegendTextColor% color of the legend text; default: [0,0,0]LegendLoc% 'NorthEast', ..., 'SouthWest': legend locationResolution% Resolution (dpi) for bitmapped file. Default:600.HoldLines% true/false. true == only modify axes settings, do not touch plot lines/surfaces. Default false.FileName% Save? Give a file name.hfig% Figure handle (optional). Default: current figure.
Return value: figure handle.
function h = plotPub(X, Y, N, opt)
This function plots X{i} vs Y{i}, changes the
properties of the generated figure and exports it as a publication quality
image file. The resolution of the image can be chosen by the user. Supported
image formats are EPS, PDF, PNG, JPEG and TIFF. The figure properties are
specified by the options structure 'opt'.
Parameters:
X%cell array of x coordinatesY%cell array of y coordinatesN%number of plots to be created. N &lt;= length(X)opt%options structure. Same as above.
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