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

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26
votes
7answers
1k views

ColorData[“VisibleSpectrum”] is wrong?

I am trying to visualize the visible spectrum using the built-in ColorData["VisibleSpectrum"] function which "colors based on light wavelength in nanometers". But I ...
4
votes
4answers
155 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 ...
2
votes
2answers
298 views

Coloring a shape according to a function

I would like to create a $2D$ shape, say an ellipse, where each point in the ellipse is colored according a RGB function, so at point ...
3
votes
2answers
244 views

Color of a plane in Contourplot3D

I have the following code example: ...
3
votes
2answers
191 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 ...
10
votes
4answers
2k views

How to convert rgb to YCbCr?

I looked at ColorConvert, but haven't found a relevant option. Is there a built-in function do this?
2
votes
2answers
143 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: ...
21
votes
3answers
443 views

How does one adjust ColorFunction quality independently of surface quality?

I have a function $f:\mathbb{C}\rightarrow\mathbb{C}$ which I would like to visualize by by plotting $|f|$ with Plot3D using $\operatorname{Arg}f$ as the ...
2
votes
1answer
93 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 ...
4
votes
2answers
200 views

Filling a plotted line both below and above the line

I'm relatively new to Mathematica. I tried looking for a solution online but couldn't find anything. I want to fill a plotted line both above the line (one color) and below (another color). For ...
1
vote
1answer
288 views

How can I choose the fill color for list plots? [closed]

I have many list plots, and I want to fill them according to my own choice of color. Can I do this in Mathematica? And how I can get different number codes of filling curves? For example, how would I ...
11
votes
4answers
3k views

How to change default notebook background color?

How does one change the default notebook background color?
1
vote
1answer
151 views

CMYK colours in a graph template

Hi I'm trying to put together a graphing template. Unfortunately, my arrowheads are a different colour than my functions when the graph is exported to something like a PDF. Is there a way I can ...
12
votes
1answer
904 views

Is it possible to style multiple Plot or ListPlot curves using a color gradient?

I am using Mathematica 8. In Mathematica, there is a default PlotStyle coloring in Plot and ...
17
votes
1answer
358 views

Color scheme used by Colorize?

The Colorize function is often used to display the results produced by MorphologicalComponents: ...
3
votes
2answers
314 views

What is the default ColorFunction for 3D plots?

This should be a really simple question, but it isn't in the documentation for some perverse reason. I like the default ColorFunction that Mathematica uses for ...
4
votes
2answers
225 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 ...
3
votes
2answers
962 views

Define a color function using Piecewise

How can I define a ColorFunction for my ContourPlot using Piecewise? For example after ...
12
votes
1answer
505 views

PieChart with radial coloring/color function

I am trying to visually compare multiple functions that depend on a single argument running from $0$ to $1$. They describe a radial property and so I thought it would be nice to use a kind of ...
1
vote
1answer
484 views

PlotStyle in ListPlot: change color scheme, manually choose color of first plot

Say i have this data: data1 = Map[Cos, Range[0, 20]]; data2 = Map[Sin, Range[0, 20]]; And i want to plot data1 in gray and a ...
1
vote
1answer
132 views

Apply ColorData scheme for Plot from green to red

I'd like to apply a ColorData to this plot: ...
2
votes
2answers
117 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 ...
0
votes
0answers
146 views

Frame and white background not working (all other colours are fine)

Though my question my be related to this one, it doesn't look like it can easily be solved in the same way, so I hope not to be double-posting. I am trying to insert a framed number/text into a ...
3
votes
3answers
193 views

Plot sublists as different colors

I have one big list with many sublists inside. All sublists consist of three numbers. For example: ...
2
votes
1answer
239 views

Normalize the PlotLegends and z values for two DensityPlot

I'm trying to compare two DensityPlots: ...
14
votes
6answers
1k views

How to find major color in a picture?

I want to find the major color (the color which appears most often) in a picture and do some analysis later. For example, if I have this picture: What I want to do is find out that gray, red, ...
2
votes
2answers
461 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 ...
1
vote
0answers
46 views

Scaled ColorData Function [duplicate]

I have a four-dimensional array c, in which the first dimension represents time and the other three dimensions represent (x,y,z) ...
2
votes
2answers
290 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
4answers
586 views

Hue shade colours

Looking at the plot below, how can I know what colours made the Hue shade? ...
8
votes
2answers
750 views

How to calculate mix of 4 colors defined in CIELAB L*a*b* model?

I have 4 colors that I converted from RGB to CIELAB L*a*b* model. How can I calculate mix of these 4 colors when I have (L,a,b) for each such color? How can I ...
4
votes
1answer
381 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 ...
6
votes
3answers
578 views

Adapt ColorFunction in Array Plot

The problem I'm facing is how to adapt ColorFunction so that it ranges from green (low values) to red (high values): ...
5
votes
3answers
501 views

Parameters for the CIE XYZ Color Space in Mathematica

In Mathematica, producing a color based on its RGB parameters is easy; one can use (for example) ...
5
votes
2answers
692 views

Plot3D with coloring based on phase value of f

I'm reading a sample chapter of Visual Complex Functions by E. Wegert. Near the bottom of this page, there is a link "Download Sample pages 1 (pdf, 2.4 MB)" which allows you to read Chapter 2 of the ...
12
votes
3answers
338 views

Impose the color for one discrete value above a color predefined gradient

If I plot an array with option ColorFunction -> "Rainbow" : ...
2
votes
2answers
591 views

How can I invert the colors in a color bar

I have this Mathematica code ...
1
vote
2answers
214 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 ...
10
votes
4answers
746 views

Coloring Points in a Plot, based on their position in the list

Before I describe the question, I'd like to say that I've seen the excellent answers posted here but have not managed to get them to work for my own data. I have a list of values that I would like to ...
14
votes
6answers
2k views

X-Y scatter plot with coloring dependent on Z value

I have an array of $(x,y,z)$ triples (array dimensions: N x 3), from which I can make a 2D scatterplot of $(x,y)$ values: ...
3
votes
3answers
251 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 ...
1
vote
1answer
125 views

Colors not showing in Graphics3D

The following code works, except that the colors aren't showing in the output. Wh? I probably made a trivial mistake, but I'm yet unable to find it. ...
1
vote
1answer
106 views

Draw only the top of the boundary of a function in Plot3d

So currently I have via combining 3 Plot3D's in a show. My question is how can I make it so that the ONLY portion of that border highlighted green, is the "curving portion" in the xy plane, rather ...
2
votes
1answer
216 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 ...
-8
votes
2answers
415 views

Color plot markers using If statement

I am calculating eigenvlaues. Some are negative, some are positive. I define the index nn and mm (as well as np and mp) of each matrix element by some functions that assign positive, zero and negative ...
2
votes
3answers
509 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 ...
20
votes
9answers
1k views

How to convert a hex color string to RGBColor?

For example: "#FF8000". How could I convert it to RGBColor or Hue?
2
votes
1answer
391 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 ...