Unable to read the .grd file using grdread2.m function

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SKP 2021-10-1

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https://ww2.mathworks.cn/matlabcentral/answers/1464624-unable-to-read-the-grd-file-using-grdread2-m-function

评论： Aarti Soni 2023-6-7

I am trying to read the attached 'file1.GRD' file using the code below. The function 'grdread2.m' is downloaded from MATLAB file exchange, as recommended in one fo the previous posts.

filename = 'file1.GRD';
[x,y,z] = grdread2(filename);

However, it is giving me errors listed below. Could someone help me?

Error using netcdf.open (line 52)

Could not open file 'Mintemp_MinT_2019.grd'.

Error in grdread2 (line 61)

ncid = netcdf.open(file, 'NC_NOWRITE');

Error in ReadnplotGRD (line 2)

[x,y,z] = grdread2(filename);

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SKP 2021-10-4

编辑：SKP 2021-10-4

Sorry, I failed to previously see that the forum gave file format error when I tried to upload .grd file directly. I have compressed and attached the file now.

I shall also contact the original author.

Thank you for responding to this question.

Aarti Soni 2023-5-31

I am having the same problem, can anyone help?

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采纳的回答

SKP 2023-6-1

1
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1464624-unable-to-read-the-grd-file-using-grdread2-m-function#answer_1248089

编辑：SKP 2023-6-1

在 MATLAB Online 中打开

'fopen' worked for me. Sample code is appended below

filename=['XYZ.grd'];
fileID = fopen(filename);
output = fread(fileID,'float');

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SKP 2023-6-1

Please use 'reshape' function to change a vector into a matrix

Aarti Soni 2023-6-7

hello @SKP

for 0.25 deg rainfall data i have used reshape function as

rainfall = reshape(rf, 135,129); (vector size = 17415*1)

it is working properly but for temperature data, how can I create matrix as it is showing on website that data is arranged into 31 X 31

thanks.

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MATLAB Data Import and Analysis Data Import and Export

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