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Plot colormapped lines and map values onto lines - plotcmap

version 1.2.0 (3.7 KB) by Xiaowei He
Plots a colormapped 2-D or 3-D line that maps the values of another variable onto the colormap on the line. LineSpec available as in >>plot.

39 Downloads

Updated 22 May 2022

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[h, cb] = plotcmap(X, Y, Z, cmap, LineValue, LineSpec, 'MatchMarkerFaceColor')
PLOTCMAP plots a colormapped 2-D or 3-D line that maps the values of
another variable onto the colormap on the line.
Specifies LineStyle, Marker, and LineWidth in the same way as plot/plot3.
-------------------------------------------------------------------------
Syntax:
plotcmap(X, Y, cmap, LineValue)
plotcmap(Y, cmap)
plotcmap(X, Y, Z, cmap)
plotcmap(__, LineValue)
plotcmap(__, LineSpec)
plotcmap(__, 'MatchMarkerFaceColor')
plotcmap(ax, __)
h = plotcmap(__)
[h, cb] = plotcmap(__)
-------------------------------------------------------------------------
Description:
plotcmap(X, Y, cmap, LineValue): plots a 2-D line using plot(X, Y) and
creates a colormap based on cmap on the
line which maps the values of LineValue
onto the colormap.
X, Y, and LineValue must be mumeric
vectors with same length.
cmap can be one of the MATLAB predefined
colormap names or an customized N X 3
colormap array.
(list of predefined colormap names:
parula, turbo, hsv, hot, cool, spring,
summer, autumn, winter, gray, bone,
copper, pink, jet, lines, colorcube,
prism, flag, white)
plotcmap(X, Y, cmap): plots a 2-D line using plot(X, Y) and creates a
colormap based on cmap on the line without the
values of LineValue where plotcmap maps an implicit
set of values ranges from 1 to length(X).
plotcmap(__, LineSpec): plots a colormapped line with specified
LineStyle, Marker, and LineWidth. Use of LineSpec
is the same as in plot or plot3.
e.g., plotcmap(X, Y, cmap, LineValue, '--o')
plotcmap(X, Y, cmap, 'LineWidth', 2).
Note that plotcmap overwrites the line color
property even if it is specified.
plotcmap(__, 'MatchMarkerFaceColor'): matchs marker face colors of
each marker to their corresponding
LineValue to create filled markers.
plotcmap(Y, cmap, __): plots a 2-D colormapped line using plot(Y).
plotcmap(X, Y, Z, cmap, __): plots a 3-D colormapped line using
plot3(X, Y, Z).
plotcmap(ax, __): displays the plot in the target axes. Specify the axes
as the first argument in any of the previous syntaxes.
Same as plot or plot3.
h = plotcmap(__): returns an array of Line objects.
[h, cb] = plotcmap(__): h returns an array of Line objects. Displays
the colorbar based on
caxis([min(LineValue), max(LineValue)]), and cb
returns the colorbar handle.
-------------------------------------------------------------------------
Examples:
plotcmap(X, Y, parula, LineValue, '--', 'LineWidth', 2):
plots a 2-D colormapped line that maps the values of vector LineValue
onto the predefined colormap parula with dashed line style and
linewidth of 2pt.
plotcmap(X, Y, jet(20), 'o', 'MatchMarkerFaceColor'):
plots a 2-D colormapped line that maps an implicit set of values ranges
from 1 to length(X) onto 20 colors of the predefined colormap jet with
filled circle marker.
plotcmap(ax1, Y, cmap, LineValue):
plots a 2-D colormapped line on axis ax1 based on an implicit set of
x-coordinate values ranges from 1 to length(Y) that maps the values of
vector LineValue onto the customized N X 3 colormap array cmap.
h = plotcmap(X, Y, Z, cool, LineValue, ':s', 'MatchMarkerFaceColor'):
plots a 3-D colormapped line that maps the values of vector LineValue
onto the predefined colormap cool with dotted line style and filled
suqare marker, and returns the line object array to h.
[h, cb] = plotcmap(X, Y, summer, LineValue):
plots a 2-D colormapped line that maps the values of vector LineValue
onto the predefined colormap summer, returns the line object array to
h, displays the colorbar, and returns the colorbar handle to cb.
[~, ~] = plotcmap(X, Y, summer, LineValue):
plots a 2-D colormapped line that maps the values of vector LineValue
onto the predefined colormap summer and displays the colorbar.
=========================================================================
version 1.2.0
- Added an output argument that displays the colorbar and returns the
colorbar handle. E.g., [~, cb] = plotcmap(__).
Xiaowei he
05/22/2022
-------------------------------------------------------------------------
version 1.1.1
- Fixed a bug that causes errors when plotting on target axes.
- Minor updates in headline description.
Xiaowei He
05/07/2022
-------------------------------------------------------------------------
version 1.1.0
- Added support for using MATLAB predefined colormaps.
- Updates in the headline description including a few examples.
Xiaowei He
05/01/2022
-------------------------------------------------------------------------
version 1.0.0
Xiaowei He
04/24/2022
=========================================================================

Cite As

Xiaowei He (2022). Plot colormapped lines and map values onto lines - plotcmap (https://www.mathworks.com/matlabcentral/fileexchange/110530-plot-colormapped-lines-and-map-values-onto-lines-plotcmap), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2022a
Compatible with R2013a and later releases
Platform Compatibility
Windows macOS Linux
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