Adding a filled polygon to a pcolor as a mask

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Gordon Jones
Gordon Jones 2011-6-23
I've got a spatial dataset that intrudes into the seabed because of the way it's been produced. However, I'm only interested in the water column data for display purposes. I'm trying to create a plot that has a filled polygon creating the sea bed.
figure
h1 = pcolor(range,depth,datacomp);
hold on
fill(brange,bathy,'k');
hold on
colormap(jet(128))
hcb = colorbar;
shading interp
This produces my pcolor chart without any problems, however I don't get my polygon produced by the fill command. brange and bathy are both arrays of the same dimensions and are the same length as my main dataset. What am I doing wrong this time?

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回答（1 个）

Walter Roberson
Walter Roberson 2011-6-23
They may be the consistent sizes, but do they have consistent meanings?
pcolor(range,depth,datacomp) uses range as x coordinates, depth as y coordinates, and creates a grid from datacomp over those coordinates. Are the values in brange the same scale and origin point as the coordinates for "range"? How about bathy vs depth ?
  1 个评论
Gordon Jones
Gordon Jones 2011-6-25
brange is simply range, but with an extra row of data.
range is a 1x600 array, depth is a 1x100 array, datacomp is 100x600.
brange is 2x600, bathy is 2x600. Should this work?
They are from the same origin though.

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