Bryan Fodness wrote: > I would also like to get the area of the mesh element when I fill the > corresponding array element. > > if a[1,0] > area = 1.0 * 0.01 > > if a[30,0] > area = 0.5 * 0.01 > > Is this possible?
I'm sorry, but I don't understand what you are asking. Are you asking how to calculate an array of areas corresponding to the grid? You know what the delta-Y values are: dy = numpy.array([1.4] + [1.0]*9 + [0.5]*40 + [1]*9 + [1.4]) Are you looking for area = dy * 0.01 ? Eric > On Nov 26, 2007 7:02 PM, Eric Firing <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > Bryan Fodness wrote: > > Could someone give me an idea how to get started with this so it > > coincides with my array of values. I took a look at the > quadmesh_demo > > in the examples and do not see a straightforward way to do this > > Maybe the docstrings make it sound more complicated than it really is. > In your case you have an array of rectangles, not general > quadrilaterals. All you need are two 1-D arrays, one each for the x > and > y grid boundaries. Something like this: > > Z = numpy.random.rand(60,4000) > X = numpy.arange(4001) > Y = numpy.array([0, 1.4] + [1.0]*9 + [0.5]*40 + [1]*9 + [1.4]).cumsum() > pcolor(X, Y, Z) > > pcolormesh should work the same, but when I try it now with svn it > doesn't; I don't know what is going on with it. If you are using a > release version of mpl, I expect it will work. > > Eric > > > > > On Nov 26, 2007 7:52 AM, Michael Droettboom <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > >> You can provide mesh coordinates to the pcolor command: > >> > >> X and Y, if given, specify the (x,y) coordinates of the colored > >> quadrilaterals; the quadrilateral for C[i,j] has corners at > >> (X[i,j],Y[i,j]), (X[i,j+1],Y[i,j+1]), (X[i+1,j],Y[i+1,j]), > >> (X[i+1,j+1],Y[i+1,j+1]). Ideally the dimensions of X and Y > >> should be one greater than those of C; if the dimensions are the > >> same, then the last row and column of C will be ignored. > >> > >> Actually generating the mesh is up to you (wink), but hopefully that > >> allows for what you need to do. > >> > >> Cheers, > >> Mike > >> > >> > >> Bryan Fodness wrote: > >>> I am wondering if there is a way to view my data with respect > to the > >>> physical size of what my array element is suppose to be. > >>> > >>> I have an array that is 60 x 4000 where, > >>> the first row has a height of 1.4 > >>> the next nine has a height of 1 > >>> the next forty has a height of 0.5 > >>> the next nine has a height of 1 > >>> and the last one has a height of 1.4 > >>> > >>> When viewing this with contourf or pcolor, the image is more narrow > >>> than it should be. Is there an easy way to view this properly. > >>> > >>> Bryan > >>> > >> -- > >> Michael Droettboom > >> Science Software Branch > >> Operations and Engineering Division > >> Space Telescope Science Institute > >> Operated by AURA for NASA > >> > > > > > > > > > > > -- > "The game of science can accurately be described as a never-ending > insult to human intelligence." - João Magueijo ------------------------------------------------------------------------- SF.Net email is sponsored by: Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
