Questions on the color models, schemes, named colors and color functions supported by Mathematica.
2
votes
1answer
60 views
Normalize the PlotLegends and z values for two DensityPlot
I'm trying to compare two DensityPlots:
...
12
votes
6answers
627 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
212 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
36 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
82 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
272 views
8
votes
2answers
425 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
161 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
355 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
262 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)
...
4
votes
2answers
226 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
164 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
150 views
1
vote
2answers
100 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
385 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 ...
13
votes
6answers
342 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:
...
0
votes
0answers
68 views
2
votes
3answers
107 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
66 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
79 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
149 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 ...
-7
votes
2answers
183 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
133 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 ...
10
votes
2answers
130 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 ...
17
votes
9answers
697 views
How to convert a hex color string to RGBColor?
For example: "#FF8000".
How could I convert it to RGBColor or Hue?
1
vote
1answer
173 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
2answers
164 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 ...
5
votes
1answer
127 views
Is it possible to render Graphics with more than “Byte” bitdepth?
I wonder is it possible to render Graphics in Mathematica with bitdepth higher than "Byte" which is the maximum bitdepth ...
12
votes
2answers
180 views
Why does DominantColors keep shuffling the order of the results?
This graphic is produced by running DominantColors (new in Mathematica 9) with different values, using the Lena image as the source:
Each row is a list of the ...
4
votes
1answer
153 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:
...
5
votes
5answers
606 views
How do I fill in a circle made by ParametricPlot with one solid color?
I have a very simple question but I am new with Mathematica.
I made a circle on a parametric plot and I made the line black.
I want to make the inside of the circle on the parametric plot red. So the ...
23
votes
1answer
424 views
The correct way to linearize colorspace before resizing, blurring etc
There was an interesting discussion on MathGroups dealing with the fact that image-processing functions in Mathematica (and many other software, including Adobe Photoshop) work with RGB, Grayscale ...
7
votes
2answers
518 views
problem with coloring spherical harmonics
I want to color a spherical harmonics. So I write as follows.
...
6
votes
0answers
111 views
Break[] inside ColorFunction
f[x_?NumericQ]:= (Do[Break[],{i,1,2}];x)
Plot[x,{x,0,1},ColorFunction->(ColorData["Rainbow"][f[#]]&)]
Break::nofwd: No enclosing For, While, or Do found ...
1
vote
2answers
127 views
Filling for ListPolarPlot
I want to use Filling for ListPolarPlot in such a way that the points in the list are joined to the origin with a line colored ...
8
votes
2answers
388 views
Use different ColorFunction for each function plotted
When plotting two curves on one plot, you can specify different colors for each function:
Plot[{Sin@x, Cos@x}, {x, 0, 4π},
PlotStyle -> {Red, Blue}]
To ...
9
votes
2answers
211 views
How can I prevent ColorFunction from disabling antialiasing in graphics?
When I use ColorFunction, the appearance of my plots is ruined, changing from this
which has the normal smooth lines and antialiased fonts, to this
in which ...
11
votes
2answers
212 views
can a ColorFunction have side effects?
Can anyone explain this (to me) odd behavior. If I run this code once (fresh kernel) it works as intended.
...
5
votes
3answers
171 views
How can I set different opacity values for the background of a ListPlot
In the following example:
ListPlot[{1, 2, 3}, Background -> Green]
how can I set the Opacity[] for the background such ...
6
votes
2answers
232 views
Problem achiving effect I want with ColorFunction
I want to create a plot showing historical annual maximum and minimum temperatures. I've figured out how to get 10 years of historical temperature data from Wolfram|Alpha. The plot below shows the ...
8
votes
3answers
202 views
Quickly display a color graphically
When manipulating colors, the output is shown as a textual expression like Hue[1/5], RGBColor[2/3, 1, 1/3], ...
1
vote
0answers
104 views
logticks in a colorbar
I have a question on using logarithmic ticks in a colorbar in Mathematica 8.0
. I use the package ColorbarPlot (...
12
votes
2answers
186 views
Pattern that matches colors
Suppose I'm writing a function that takes a color as a parameter; for example:
drawShape[color_] := Graphics[{Style[Disk[], color]}];
But if the caller inputs an ...
3
votes
3answers
319 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 ...
2
votes
3answers
310 views
Color mixing or blend
Color mixing seems not only one type.
Here is RGB_color_model
I wrote this one:
...
5
votes
3answers
261 views
ColorFunction and/or ColorScaling issue with ParametricPlot3D
My goal is to use ColorFunction to color a cylinder based on the $z$ value of a separate Plot3D. I'm not sure if I am making a ...
1
vote
1answer
135 views
Use selfdefined ColorFunction to encode z dimension with predefined limits
In my last question we defined a colorfunction cf. Now I want to use this ColorFunction for a number of different plots (...
3
votes
2answers
248 views
Define a color function based on color samples obtained from ColorBrewer
I am quite new to mathematica and I am searching for a way to create a smooth colormap based on the samples given by http://colorbrewer2.org/ .
Is it possible to create a interpolated function from ...
6
votes
2answers
510 views
Gradient/ColorFunction in Disk with transparent background
My goal is to make an iOS-like enable/disable switch like this:
I use a LocatorPane for the slider with so-called "jumps" to only make two settings possible:
...
1
vote
1answer
118 views
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, ...
