change CRS in netcdf4 files

Hi, I have a bunch of netcdf4 files and need to convert to different coordinate system.

How can we do that?

thanks.

[KSSV]

More inofrmation is needed....

1. Read the variables.
2. Check in what projection they are
3. USe certain defined transformation and convert them.

[Sri Adiyanti]

Hi, I am familiar with netcdf4 processing (reading, define and put variables, copy and put attributes, etc.). My MATLAB license include Mapping toolbox. Original coordinates CRS is WGS84 (epsg 4326). I want to convert it to GDA2020 (epsg 7850). What is the transformation function i can use for the conversion?

Thanks.

Answer 1

[Walter Roberson]

Use Mapping Toolbox, projcrs . It is code 7845 according to https://www.mathworks.com/help/map/coverage-maps-for-satellite-constellation.html

[Sri Adiyanti]

Thanks Walter, my understanding of projcrs is to project from latitute, longitude to northing, easting but they are already in the same CRS. My case is that the CRS are different hence a need to convert between from original CRS to target CRS first before project them. What do you think?

[Walter Roberson]

@Sri Adiyanti

Use projfwd to convert from WGS84 to x y, then use projinv to convert the x y to GDA2020

[Sri Adiyanti]

Thanks Walter, got it!