[gradsusr] question about FWRITE

姚凯 ken3yao at 126.com
Fri Mar 3 03:55:59 EST 2017


Dear all:
    I used the 'set gxout fwrite' function to separate the large GRD data including the radar reflectivity (about 77G) into pieces and saved them as .grd file.Now, I want to do some calculation about the reflectivity using MATLAB. But, when I used the fopen and fread function in MATLAB to read the small grd data, I found that the value of the reflectivity was excessing 10E8 which is unreasonable. I thought that maybe caused by the different precision between the grads fwrite and the MATLAB fread. So I wonder what precision used by fwrite in grads.


Thanks in advance! 
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