plot geo data using lat and lon as pixel centers

Is it possible to plot data on a map where each lat-lon pair represents a pixel center? For example if I have three equally sized matrices with lat, lon and actual data. I've tried several plot commands but all of them seems to use each lat-lon pair as the location of a pixel corner. I want each plotted pixel to represent the real one in size and shape, so for example scatterm would not work.

[lvn]

What is the shape of the 'real' pixel (circular/rectangular/..?).

[Johan]

it's a parallelogram, but a rectangle would be a sufficient approximation

Answer 1

[Sara]

Offset them by half the dimension of each cell in the grid. If lat is your array, then do

d = diff(lat)/2;
d(end+1) = d(end);
lat = lat - d;