Open the *.grd data using ENVI following these steps:

Step 1: Open the file and give parameters e.g. Samples = , Lines = , Bands = 365, File type ENVI standard, Data type= Floating, Interleave = BSQ.

Step 2: Rotate the image by Angle = 270 and Transpose = Yes

Step 3: Change the Map Info.... Image X: 1, Image Y:1, Proj: Geographic Lat/Lon, Daturm: WGS84, E = 66.5, N = 37.5, X Pixel Size = 0.25 Deg, Y pixel size = 0.25 Deg

Step 4: Change geographic corner coordinates: Point 1: 1 (image X), 1 (Image Y), 37.5 (Lat), 66.5(Lon), Point 2: , 1, 37.5, 100.5; Point 3: 1, , 6.5, 66.5; Point 4: , , 6.5, 100.5.

thats it.. enjoy !!

Step 5: copy the *.hdr file and rename it as template.hdr and make a batch file (e.g. rename.bat) with command copy template.hdr so that all four steps are not to be repeated next time.

Open the *.grd data using ENVI following these steps:

Step 1: Open the file and give parameters e.g. Samples = , Lines = , Bands = 365, File type ENVI standard, Data type= Floating, Interleave = BSQ.

Step 2: Rotate the image by Angle = 270 and Transpose = Yes

Step 3: Change the Map Info.... Image X: 1, Image Y:1, Proj: Geographic Lat/Lon, Daturm: WGS84, E = 66.5, N = 37.5, X Pixel Size = 0.25 Deg, Y pixel size = 0.25 Deg

Step 4: Change geographic corner coordinates: Point 1: 1 (image X), 1 (Image Y), 37.5 (Lat), 66.5(Lon), Point 2: , 1, 37.5, 100.5; Point 3: 1, , 6.5, 66.5; Point 4: , , 6.5, 100.5.

thats it.. enjoy !!

Step 5: copy the *.hdr file and rename it as template.hdr and make a batch file (e.g. rename.bat) with command copy template.hdr so that all four steps are not to be repeated next time.

Yes.. I agree with CP Singh. If ENVI is not available than some other software can be used to extract the data of compressed files

Trying to get details

Dear Aswin,

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Cheers

How to obtain the IMD rainfall data for a particular region. pls

Chandrakant Kadam you can download it from IMD website

http://www.imdpune.gov.in/Clim_Pred_LRF_New/Grided_Data_Download.html

IMD gridded rainfall and temperature data can be downloaded from the following link: http://www.imdpune.gov.in/Clim_Pred_LRF_New/Grided_Data_Download.html

The link also provides sample C and Fortran codes for extraction of data from .grd format. These codes can be edited and customized for your need. You can thus extract values for your region of interest (latitudes, longitudes).

Hi,

See this one. IMDlib package in Python

https://pypi.org/project/imdlib/

Hi,

Thank u.

You can use this tool for yhe extraction of the IMD gridded data. You required the lat long information of your interest. https://github.com/sinannizar/IMD-Gridded-Rainfall-Extractor