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

learn more… | top users | synonyms (2)

4
votes
2answers
174 views

GraphPlot with black edges no rendering function

Is there any way to make the edges of a GraphPlot black without tediously writing out a long "EdgeRenderingFunction"? I guess you could ask the same kind of question about vertex labeling. For ...
4
votes
2answers
185 views

Using two color functions in a MatrixPlot

I'm trying to use two color functions within one MatrixPlot in Mathematica. Is it possible to do this? For example, using a very simple matrix: ...
4
votes
4answers
180 views

Change the colour of a ListPlot element in each iteration of Manipulate

I would like to modify the colour of dots in a ListPlot[Table[function]], e.g ...
4
votes
2answers
410 views

Colorize Grayscale Image

I have a grayscale image that contains two objects. The grayscale pixel values can be divided into three intervals where two of them represent objects and the third represents the background. The ...
4
votes
1answer
499 views

Calculating pleasant colors for source code or web-design

I really like when the programs or editors I use have pleasant colors. Sometimes when there's nothing else to do or sometimes when there are very important, but incredibly boring things to do, I find ...
4
votes
1answer
187 views

Trial version 10 vs Version 10 Prerelease 13

When I open the new trial version (creation id 5099521; 10.0.30732.17750) I get these error messages and only a partial view of the "About" box I haven't run into any particular problem, except ...
4
votes
2answers
210 views

CMYK colours changing

If I draw a coloured diagram like Graphics[{CMYKColor[0, 0.83, 1, 0], Rectangle[{0, 0}], CMYKColor[1, 0, 0, 0], Rectangle[{0.5, 0.5}]}] and select the red ...
4
votes
2answers
123 views

Match colors to plot themes

How do I get the colors to match the plot theme when I use a PlotLegend that is separate to the plots? I have had a look at How to access new colour schemes in version 10? but can't seem to find what ...
4
votes
1answer
80 views

Can't Get BarChart to use ColorFunction

I'm trying to get a BarChart to colour negative valued bars red and positive valued bars green but I'm having a time trying to do it. My latest attempt is: ...
4
votes
2answers
161 views

Coloring the points in a ListPlot with the value of another function [duplicate]

I'm a relative beginner in Mathematica, but after reading the forums for a long time, I couldn't understand one thing: I want to plot a list h. Let's call it ...
4
votes
1answer
137 views

Why are the two shades of the same color in this figure?

Given $S \subseteq \mathbb{C}$ I am trying to plot $f(S)$ for given complex valued function $f$ Looking at other answers on this site for similar questions, I came up with this ...
4
votes
2answers
234 views

Modified Cell Different Display

Is there a way to show maybe a slightly different color, or change the cell bracketing color of a Mathematica cell when it has been modified? Ideally it would be nice to follow the standard of ...
4
votes
2answers
307 views

Color based on (discrete) derivative of function

I am making a very basic stock simulation. I want ListLinePlot to color my stock viewer based on whether the price went up or down from the previous price. Here is ...
4
votes
1answer
273 views

How can I colorize an imported model?

How can I colorize an imported model from for example 3ds max? I'm trying to find the way to colorize a 3D plot from an imported model with something like this: ...
3
votes
3answers
339 views

How to create a Disk with smoothly changing coloring?

I want to have a disk. But this disk shouldn't have a fixed color; instead, I'd like it's color to fade smoothly. Until now, I came up with two ideas how to achieve this. Idea #1: ...
3
votes
2answers
245 views

How can Mathematica convert CMYK values to RGB or HSB?

...
3
votes
4answers
784 views

Hue shade colours

Looking at the plot below, how can I know what colours made the Hue shade? ...
3
votes
3answers
203 views

Plot sublists as different colors

I have one big list with many sublists inside. All sublists consist of three numbers. For example: ...
3
votes
4answers
139 views

ReplaceImageValue and ReplacePixelValue extremely slow

I have a grey scale image: and I am doing the following: bin = Binarize[image, 0.18] ...
3
votes
3answers
281 views

How to paint part of DateListPlot?

My graph is about fires (burned area) over 12 years presented in one Date List Log Plot. Because most of fires are in summer (as expected) I would like to highlight that with different background ...
3
votes
2answers
818 views

Use ColorFunction in ListLinePlot with If

The following code ListLinePlot[{2, 4, 6, 8, 10, 12}, ColorFunction -> Function[{x, y}, If[x <= 3, Blue, Red]]] should produce blue lines for $x\le3$ and ...
3
votes
2answers
2k views

Define a color function using Piecewise

How can I define a ColorFunction for my ContourPlot using Piecewise? For example after ...
3
votes
3answers
659 views

Comparing 2 Data Sets in a Single Plot

I have 2 data sets, data1 and data2 with large (in the thousands) amounts of data and I want to compare them in a plane. They ...
3
votes
2answers
526 views

HSB -> HSL Converter

Starting from an image I would like to apply a custom filter to an image. I have thought and implemented this filter in HSL space and it goes like this : Boost the saturation of the pixels that ...
3
votes
2answers
1k views

How to assign different colors to list plotted in ParametricPlot? [duplicate]

Possible Duplicate: Difference in Plot when using Evaluate vs when not using Evaluate I am plotting galaxies and I would like to color them according to their redshift values using a ...
3
votes
1answer
352 views

Creating multicolored meshed plots (connected scatter plots) using ListPlot

I would like to make colored scatter plots where the dots are connected by lines. I have tried the following, using Joined->True to connect the dots and ...
3
votes
2answers
285 views

How do I show only the intrinsic color of 3D polygons?

System: Mathematica 9, Windows 7. I want to assign a polygon a color in such a way that it is rendered in that color irrespective of any ambient light sources. In other words I want Yellow to be ...
3
votes
3answers
154 views

How to shade a plotted region in specific direction?

I am using RegionPlot to plot a linear program maximize 30x1+25x2 with the constraints ...
3
votes
3answers
303 views

Colorize a 3D distribution of points according to density

Suppose we have some random 3D distribution of points. I'll use the spherical ball defined below as an example and a starting point for the discussion here : ...
3
votes
2answers
210 views

How can I detect and modify one area of an image while preserving the rest

I have an image with a big black disk bounded by a white boundary in its center. The image contains some other stuff outside of the spot and its boundary. This stuff has colors which include both ...
3
votes
2answers
482 views

Color a Function by its Derivative

Mathematica's ColorFunction seems to struggle with coloring a function "y" by its derivative D[y,x]. This is a seemingly simple task, but Mathematica can't handle it. While I can certainly evaluate ...
3
votes
2answers
218 views

Contour coloring and (List)ContourPlot projection

I have two questions concerning (List)ContourPlots. Since they are related to a single visualization desire, I have combined the questions into a single post. I'm hoping that they will be easy to ...
3
votes
1answer
213 views

Plotting with ColorFunction -> GrayLevel - no black

This is probably a fairly trivial question, yet I have been unable to find an answer - help would be much appreciated! :) I am trying to plot a 28 x 28 matrix (tabulated data given here), containing ...
3
votes
1answer
353 views

ContourPlot or DensityPlot ColorFunction with x, y and z arguments

Is it possible to apply a color function to ContourPlot or DensityPlot that is function of x, y and z, and not simply of z? Example: ...
3
votes
1answer
113 views

Frontend coloring of Table[x, {x, 0, x}]

I have a small question about how the Mathematica frontend colours in the variables that appear in (wrongly written) iterators. More specifically, I'm intrigued by the colour of the third ...
3
votes
2answers
51 views

How do I apply a ColorDataFunction[] to a grayscale image? [duplicate]

Suppose I have a 2D array im of real values between 0 and 1, representing a grayscale image. I can turn im into an image very ...
3
votes
1answer
76 views

The default ColorFunction of DensityPlot before v10?

The default ColorFunction of Plot, Plot3D before v10 is respectively mentioned here and ...
3
votes
2answers
67 views

BarLegend using Function that uses Blend

I'm sorry if this is a duplicate, but I don't even know how to look for it. I had this line of code that worked on a Notebook I wrote on Mathematica 9.0: ...
3
votes
1answer
105 views

How to color a BSplineSurface

I am trying to color a BSplineSurface in a complex way but not having any luck using ColorFunction. I can use ...
3
votes
1answer
341 views

How to make custom discrete color data function

Attempting to make custom discrete color data function: my custom color: is it possible to use my custom color ...
3
votes
3answers
183 views

Center Diverging color map on a matrix plot

I want to use the color function "RedBlueTones" and I want to center the map at a number. Then I want to blend in the red direction of I am greater than that number and blend in the blue direction if ...
3
votes
2answers
336 views

Color of a plane in Contourplot3D

I have the following code example: ...
3
votes
1answer
121 views

How can I combine two color schemes for plotting?

I want to use ListContourPlot to display all negative values using one colorscheme and all positive values using another color scheme. This question Define a color function using Piecewise gives some ...
3
votes
1answer
140 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
87 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
94 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
291 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
128 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
149 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
71 views

RegionPlot with ColorFunction gives ugly frame labels

I was working on a simple 2D region plot: ...