Questions on the color models, schemes, named colors and color functions supported by Mathematica.

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3
votes
1answer
147 views

How can I pick a color from a ColorMap and colorize selected image pixels with this color

I have a binarized image and would like to set pixel values which are 1 to a certain (any) color picked from ColorData["TemperatureMap"] and 0 to another color of TemperatureMap. How can I do that? ...
3
votes
1answer
98 views

Draw function with different colors associated to a parameter

I want to generate a plot similar to this one, which allows for different colors when given different parameters : (This is the Moreau-Yosida regularization of the absolute value) the Moreau-Yosida ...
3
votes
2answers
116 views

Set the scale in ColorFunction

The following plot (A) ListLinePlot[{0,1,2,3},ColorFunction->"TemperatureMap"] goes from blue to read. The following plot (B) ...
3
votes
3answers
314 views

Using a complicated function as color function

I have an ellipsoid with parametric equations lst = {10*Cos[u]*Sin[v], 3*Sin[u]*Sin[v], 2*Cos[v]}; I define a function ...
3
votes
1answer
133 views

How can I change label colors in a colored chart?

I am trying to make a chart with labels, but I would like for the labels on the chart to be white for purposes of visibility. I am aware of the ...
3
votes
1answer
176 views

Giving a custom style a colored gradient background

In Mathematica, customizing Sections, Subsections, Titles and so on, can be done with Format > Style > .... Changing the background color of a style is one of the things you can do. Here is an example ...
3
votes
1answer
81 views

RegionPlot with ColorFunction gives ugly frame labels

I was working on a simple 2D region plot: ...
3
votes
1answer
134 views

Recognizing Matching Colors in a Game Grid from a Camera Image

I am relatively new to Mathematica, having taken my first serious dive into it this week. As a fun project to teach myself some of the basics, I've come up with a goal of optimally solving a game ...
3
votes
2answers
149 views

I want to change the outer background color of a manipulated plot

I downloaded some demonstrations' sources (for example) and I want to change their colors. I am only stuck with the white outer background that is around the plot's yellow background. I would like to ...
3
votes
1answer
98 views

ArrayPlot of square matrix: how does ColorFunction -> Automatic work?

Suppose you have the following: tt = Table[{i, j}, {i, 0, 10}, {j, 0, 10}] The table tt is a matrix of pairs, ...
3
votes
0answers
75 views

Is there any faster implementation of DominantColors?

The function DominantColors is a simple function but runs incredibly slow when the number n of dominant colors to find is large - it is currently the biggest bottleneck in my code: ...
3
votes
0answers
49 views

How to replicate v9's color conversion to LAB under v10

Mathematica 10(.0.0) appears to use a different flavor of the LAB color space, but I would like to emulate the same behavior observed in version 9(.0.0). v9 ...
2
votes
2answers
693 views

How do I find the average color of an image?

It sounds so simple to do, but the best solution I've found so far is by using the MeanFilter function, which isn't really feasible on large images. Can anyone help ...
2
votes
3answers
311 views

Coloring random points in an annulus

I have found the following random generator to generate points in an annulus in stackoverflow on stackoverflow ...
2
votes
3answers
659 views

Color mixing or blend

Color mixing seems not only one type. Here is RGB_color_model I wrote this one: ...
2
votes
2answers
112 views

ListPlot a bunch of points that changes colour

I have a list of points: r = Range[-Pi/2, Pi/2, Pi/8]; angles = (c = Tuples[r, 2]) and a list of numbers which will determine the colour of the points above: ...
2
votes
3answers
219 views
2
votes
2answers
978 views

How can I invert the colors in a color bar

I have this Mathematica code ...
2
votes
2answers
100 views

Make a colored ListPlot

Basically I have a set of 3D points, such as {3,4,3} or {4,1,4}. Instead of plotting the points in a 3D space, I want to plot the x,y coordinates of the points on the 2D plane and use the z coordinate ...
2
votes
2answers
303 views

Colors for multiple piecewise functions

I have the following $3$ piecewise functions, and I would like that f1, f2 and f3 have $3$ ...
2
votes
1answer
404 views

White regions in DensityPlot — is this a bug with ColorFunctionScaling?

Is this a bug with ColorFunctionScaling? When I try to supply my own ColorFunction Mathematica seems to partially ignore it, ...
2
votes
1answer
187 views

How can I mix colors?

As far as I know if you combine Blue and Green the result is Cyan (using additive mixing). ...
2
votes
3answers
745 views

Controlling Bar Color in BarChart precisely [duplicate]

I'm trying to control the color of individual bars in a BarChartwhen I pass a 2 dimensional list of data to plot. What I want to accomplish is that for each pair of ...
2
votes
2answers
51 views

Can i change AutoStyles colors for undefined variables?

I want to change from blue to red the color of the undefined variables; but only for the current Notebook
2
votes
1answer
150 views

Two discrete colors for surface with ParametricPlot3D

I am trying to create a plot of a surface that is yellow above the xy-plane (z>0), but blue below (z<0). My first attempt was to use ...
2
votes
2answers
304 views

DensityPlot Increase Information

I am trying to make a density plot in Mathematica, however the distribution of the plot is not as visible as I would like. I plotted the same function in python and it contains a greater visible range ...
2
votes
2answers
173 views

ListDensityPlot controlling the number of colors

Is there a way to set the number of colors used in ListDensityPlot. I am using "Rainbow" as follows: ...
2
votes
1answer
205 views

Why is the test in my ColorFunction not behaving as expected?

In my code I have a ColorFunction that is meant to highlight all values of $f(x)$ that are greater than $x$ ...
2
votes
2answers
69 views

How to convert a coloured image according to the colorfunction I defined?

I got an image from a website which follows the colorfunction "Rainbow", e.g. ...
2
votes
2answers
94 views

StreamColorFunction ignored when setting to the RGB color

Recently I needed to color streamlines with exact color (e.g. RGBColor[0.1,0.478,0.5]). The help (http://reference.wolfram.com/language/ref/StreamColorFunction.html) suggests, that this can be ...
2
votes
1answer
163 views

Buttons Which Change Color, Each Time Pressed [closed]

I need to have 100 buttons, which their color is defined by the parity of number of times they are pressed: If they're pressed an even number of times their color is blue, and otherwise red. I don't ...
2
votes
1answer
61 views

Change the colors of individual atoms in a .mol or XYZ file

Similar to (Changing the atom color for plotting xyz-files), I want to take a molecule and then simply change the colors of individual atoms. I don't want to change all atoms of a type to a color ...
2
votes
2answers
325 views

ColorFunction based on data

I have a list of numbers, and I would like to plot them using ArrayPlot (which is easy, usually :)). I would like to be able to color the elements of the plot based on the average of the list: one ...
2
votes
2answers
580 views

Spreading colors in ListContourPlot

I have a data file with triplets. The first two numbers indicate the x and y position, while the third one is the log10 value of a particular indicator. I want to create a 2D plot in which the ...
2
votes
1answer
73 views

Having variables appear aqua in user defined function [duplicate]

In many of the inbuilt mathematica function, variables appear aqua like in: However, when creating your own function, variables no longer have that green coloring and are instead colored like an ...
2
votes
1answer
121 views

Coloring a set of polygons, each polygon to have a specific color

In addition to my previus post, regarding plotting the surface of a Möbius strip, I now realised, that some of the eigenmodes for a Möbius strip are either oscillations of a scalar field OR a vector ...
2
votes
1answer
402 views

Normalize the PlotLegends and z values for two DensityPlot

I'm trying to compare two DensityPlots: ...
2
votes
1answer
465 views

How to colorize a rectangle with a given color function?

I want to set color to a rectangle (in fact a line) that lies on (0,0) and (1,0), and the color function is given by $u(x,t)=t(x-x^2), 0\leq t\leq1$. Since, this $u(x,t)$ act as temperature at the ...
2
votes
1answer
39 views

Change ColorScheme of DistributionChart

The "ColorScheme"of a DistributionChart can be changed using the ChartElementFunction like in the following example: ...
2
votes
2answers
65 views

Default color for Filling in Mathematica 9

The default color scheme for plots in my Mathematica version is ColorData[1]. What about for the Filling option?
2
votes
1answer
238 views

Color coding based on 4D data within a building

I am trying to create something similar to a Heatmap within a building. Suppose I have a room with dimensions, {30,40,50} as length, width, and height respectively. I have a set of data that is of ...
2
votes
2answers
45 views

Coloring specific elements of sets with a prime modified order in an array plot

I have a set of sets: {{1}, {0}, {1, 1}, {0}, {1, 0, 1}, {0}, {1, 1, 1, 1}, {0}, {1, 0, 0, 0, 1}} I’m seeking to apply a color rule to only every other set, starting from the first (from left to ...
2
votes
1answer
61 views

Inconsistent behavior in ColorFunctionScaling of BarLegend in v10.0.1

I find the ColorFunction in BarLegend behaves very weirdly: Force rescaling from 0 to 1 For example: ...
2
votes
1answer
150 views

Can I apply a ColorFunction to FaceGrids, or otherwise have FaceGrids with varying color?

I want to make a 3d plot with FaceGrids with a certain color scheme. Specifically, I'd like them to be one color below a diagonal line, and a different color above ...
2
votes
0answers
24 views

Calculating number of discernible colors in CIE La*b* space

How can Lab space be easily splitted into unity cubes and determined number of cubes that colours of certain image occupy?
2
votes
0answers
53 views

Background color does not display in InputField unless Appearance option is also specified

I get the same behavior for v10.1.0, v.10.0.2 and v.9 with OS X (10.9.5) : No background color is displayed in InputField if I just set properly the option. For ...
2
votes
0answers
93 views

How can I transfer colors from first image into second image? [duplicate]

How can I transfer colors from first image into second image, where every object from the first image should take the same object's color from first image. This images are only an example. this is ...
1
vote
2answers
252 views

How to blend some colors on a curve

I need to define a color gradient on a 3D curve, but I'm having some problems with this. Suppose we have a 3D curve defined as a parametric function of some real variable ...
1
vote
2answers
199 views

Image's pixels GPU colour classes splitting

How can I split in color classes, the pixels of an image that I load in Mathematica? I would an output like this: ...
1
vote
2answers
481 views

Coloring vertices using GraphPlot

I have the following problem: I used GraphPlot to plot my adjacency matrix. I divided my nodes in three groups: ...