Adding a filled polygon to a pcolor as a mask

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?

Answer 1

[Walter Roberson]

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 ?

[Gordon Jones]

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.