search for: colours

I've been thinking hard about generating colour schemes for data. There's quite a bit of existing code scattered in various packages for playing with colours and colour palettes, but I can't find the sort of thing I'm after for applying colours to data... To my mind a colour scheme is a mapping from data values to colours. There's a multitude of such mappings depending on the nature of the data. For example, for a factor you might want to m...

...;>@@ -1,13 +1,15 @@ </span><span class="cx"> h1(#wxcolour). Wx::Colour </span><span class="cx"> </span><del>-A colour is an object representing a combination of Red, Green, and Blue (RGB) intensity values, -and is used to determine drawing colours. See the -entry for "ColourDatabase":colourdatabase.html for how a pointer to a predefined, -named colour may be returned instead of creating a new colour. </del><ins>+A colour is an object representing a combination of Red, Green, and Blue +(RGB) intensity values, and is used...

...pan><span class="cx"> end </span><span class="lines">@@ -31,16 +31,17 @@ </span><span class="cx"> Wx::LIGHT_GREY = new(192, 192, 192) </span><span class="cx"> </span><span class="cx"> # Colours are equal to one another if they have the same red, green </span><del>- # and blue intensity. </del><ins>+ # and blue intensity, and the same alpha </ins><span class="cx"> def ==(other) </span><span class="cx"> if not other...

Dear list members I'm currently working on some topographic (elevation) data, and was somewhat surprised that the 'topo.colors' and 'terrain.colors' are of little to no use here. The problem is that these functions only return a palette of colours; they don't map depth values to colours. So if I plot (using 'image', 'persp' or similar functions) and specify these palettes, ocean areas may coloured green (indicating) land, which may be quite confusing. I have looked through various packages, and have found several colo...

I'm trying to run an old (~1995) Windows game under Wine, but it requires 256 colours and won't work any higher. I've checked out the 256 colour hacks page and the X methods don't work, because I use the FGLRX drivers and they don't support 8bpp, so I'm trying VNC. I've installed vnc-server and vnc so I can play it through a 256 colour VNC connection, but so...

Just as an exercise I am tying to add colours to a geom_segment command. I can get one colour but not a sequence of colours. Can anyone suggest how I can get the green lines in the plot below to be different colours? I thought I could use a palatte of colours but that did not seem to work. Thanks ==========================================...

On 16/04/2016 8:47 AM, Atte Tenkanen wrote: > Hi, > > How would you calculate the "mean colour" of several colours, for > example c("#FF7C00","#00BF40","#FFFF00")? > Bert answered your subject line question. Your text is asking something else: if those are colours, you don't want to treat each of them as a single integer. A simple-minded approach would split them in...

Ok, been banging my head on this and just can''t figure it. Normally, any table that has a belongs_to to another table you can easily access it by: table1.table2.field And it works perfectly for one table I have. Let''s call it... tags. So, I''ve got: Tag -> has_many :blah_tags Blah -> has_many :blah_tags Blah_tag -> belongs_to :tag, belongs_to :blah Ok, works

...0,50), border=0.9, add =TRUE),levels=zprcp.breaks,col=zprcp.colour,key.axes = axis(4,zprcp.breaks)) I would like the colour bars to be even (and the labels to represent the actual quantile values). I tried to modify the key.axes=axis(..) to force an evenly spaced colour key (and keeping the same colours) but it seems that this ultimately obeys the 'levels' and 'col' parameters already defined, which are also used for the main image. I have also tried to "decouple" the 'levels' and 'col' settings between the main plot and the legend by fiddling with the fil...

R version 2.7.0 RC (2008-04-20 r45403) When using semi-transparent filled plotting symbols, the border of the symbol has a different (darker) colour than the interior: plot(0, 0, pch=19, col="#FF000022") (Saving this as a PDF and looking at it magnified may make it easier to see.) This is pretty annoying, since when plotting partially overlapping points, the border colour dominates,

In case anyone else is trying to make this work, here is what I did (Before 0.7.4 I had patched the regex in zentest redgreen, but that is not used any more) To use directly, it is very simple. In rspec_autotest/lib/ rspec_autotest.rb, add a -c to the spec_command in the initializer function: @spec_command = "spec -c --diff unified" This won''t help however if you want

...ainbow states "Conceptually, all of these functions actually use (parts of) a line cut out of the 3-dimensional color space...". This suggests to me that the resulting colors are all placed on this "line" and are equi-distant along it. The resulting color palette is a range of colours where adjacent colours are actually quite similar, especially when n (the number of colours) is high. Conceptually I guess what I want is colors from a 3D polygon in 3D colour space, where the number of vertices in the polygon is n, resulting in a color palette where the colors are all quite diffe...

Hi, Color of my step plot is now by default. Now I'd like to change the color as the grey scale I specified. I don't know why I got three black plot. Here I attach two version of codes. The first one produces a step plot with color by default. The second one, modified from the first one, is not producing the grey scale I want. Any help would be highly appreciated. [version 1- working]

...instead is to plot the line of this data, not the points. i.e., plot(date, flow, type="l") But I would like the colour of the line to change with each level, i.e., plot(date, flow, type="l", col=colour) But this doesn't work because the line is continuous and the colours are discrete. I looked into using clipplot, but I'm not sure how I would specify limits that would give different sections of the line correct colours. Does anyone know of a way to draw a line with different colours? One way I thought of was to plot each level of flow separately and then buil...

Hi, How would you calculate the "mean colour" of several colours, for example c("#FF7C00","#00BF40","#FFFF00")? Yours, Atte Tenkanen

Dear R-help, Could any of you direct me to a function for plotting a grid of colours, directly specified by a matrix of hex colour codes? In other words I'm looking for a heatmap() or image()-like function to which I can specify the colour of each grid location directly, rather than providing a numerical matrix and a 1D-colour scale (heatmap, image, levelplots,NeatMap...). I...

...ood statistical graphs. I tried the kmean clustering for a large matrix ,say > 150 * 150 . I tried the example code given in the tutorial to perform 2d plot # i ranges from 2 to 10 cl <- kmeans(x, i, 20) plot(x, col = cl$cluster) points(cl$centers, col = 1:i ) I see that there are only 8 colours defined , namely black,red,green,blue,cyan,magenta,yello,gray. How should i set my colour preferences to obtain my palette of colours? I checked in the totorial which talks about R.colors and palatte , but i failed to understand how to set it. Thank You Asha

...;} #patch ins {background:#dfd;text-decoration:none;display:block;padding:0 10px;} #patch del {background:#fdd;text-decoration:none;display:block;padding:0 10px;} #patch .lines, .info {color:#888;background:#fff;} --></style> <title>[849] trunk/wxruby2/lib/wx/classes/colour.rb: Stock colours weren''t initializing correctly</title> </head> <body> <div id="msg"> <dl> <dt>Revision</dt> <dd>849</dd> <dt>Author</dt> <dd>brokentoy</dd> <dt>Date</dt> <dd>2007-01-14 11:05:20 -0500...

Hello, Can somebody help me on a colour question? I have a levelplot made with the following syntax: library(lattice) inp <- read.csv("hoenne1", header = TRUE) levelplot(z~x*y, data = inp, region = TRUE, pretty = TRUE, col.regions = terrain.colours) The file "hoenne1" contains the data. I'll give a short example: x,y,z 0,0,1 0,1,1 0,2,1 1,0,2 1,2,2 0,2,2 1,2,3 2,2,2 You see that data point 1,1 is missing. My script therefore produces an "empty" field. I want the following: the colours should be distributed as interpo...

...st b, but I would like to colour the points according to their corresponding c values. c takes the value of either 0,1,2,3 or 4 and so I would like to colour all of the points with a c value of 0 one colour, all those with a c value of 1 another colour etc. When I use the following code, it colours the points using default colours, which are not suitable: data<-read.table('abc',header=T, sep="\t") attach(data) library(lattice) xyplot(a~b, col=c) I was therefore wondering how to specify my own set of colours for each of the c values. Any help would really be apprecia...