How to display DTM (.img) in Matlab

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MENGZHI DI
MENGZHI DI 2018-10-20
Now I have a DTM, I read it in Matlab using the following code. And the data is a 301989888 x 1 matrix. I try to display it, but it is too big and my Matlab just break down each time. Could someone give me some advices about how to do this?
fid = fopen('DTM_MAP_02_N24E000N21E003SC.img');
data = fread(fid);
fclose(fid);

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