the problem of shifting and pcolor
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Hi all, I am doing this code, and it appears that my text pixels are shifted compared to my pcolor output. Any suggestions. Note, my data contains NaN so image() does not work. Also, x and y are both of matrix types, not vectors. Any suggestions would be really appreciated. THANKS!
m_proj('stereographic','lat',90,'radius',60, 'rotateangle',270)
[lat_new,lon_new] = ndgrid(lat,lon);
[x,y] = m_ll2xy(lon_new,lat_new);
h = pcolor(x,y, cor); hold on;axis xy;
shading flat
sz = size(lat_new);
for i=1:sz(1)
for j=1:sz(2)
if prob(i,j)==1
%THESE APPEAR TO BE SHIFTED:(((
g = text(x(i,j),y(i,j),'*');
set(g,'fontsize',[10]);
set(g,'fontweight','bold');
hold on;
%z = text(x(i,j),y(i,j),num2str(cor(i,j)));
end
end
end
0 Comments
Answers (2)
Image Analyst
on 4 Jul 2012
Right. We talked about this before. Don't use pcolor. image() and imshow() have no problem handling images with nans in them - I actually tried and verified that. You just have to make sure x and y are in the range of 1 to sz(1) or sz(2)
4 Comments
Image Analyst
on 4 Jul 2012
I don't have those functions. If they're in the mapping toolbox, I don't have that. You can use a colormap to get rid of the blue, like
imshow(yourArray, []);
colormap(gray(256));
jenka
on 4 Jul 2012
2 Comments
Walter Roberson
on 4 Jul 2012
Yes, that is how it is designed, and is the reason not to use pcolor()
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