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Questions tagged [grads]

The Grid Analysis and Display System (GrADS)

The Grid Analysis and Display System (GrADS) is a system for analysis and visualisation of gridded data in Earth sciences.

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for loop in GrADS

I am a starter of GrADS. I would like to set loop to convert many .ctl files into netcdf. First, I succeeded to convert one file to netcdf using below script. open surf_HFB_2K_MI_m102_203009_rain_subset.ctl define rain = rain set sdfwrite…
marie
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How to merge multiple .HDF5 files in single file in Octave

I have multiple .HDF5 files of 30 min IMERG precipitation data for a month (July 2022) in a folder having same shape. Is there a way to merge multiple files in a single file through Octave or any other source? If not the how to open multiple files…
Nayan
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How do I open a grib dataset in grads in Windows?

I've tried all methods but I've faced a block at some point in time. I'm an amateur weather-data "collector" so any help would be appreciated
Weathercoding
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GrADS script sometimes throws error while opening grib ctl file

Getting this error for GrADS (SUN Grid Engine) logic. However, the grib file and its associated ctl file exist and are valid. If I try to re-run the grads script job, it succeeds. I just don't understand why it sometimes fails. opening ctl…
Prachi
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Adding bar in plot for GrADS?

Have a nice day everyone, I'm trying to add a bar for my plot in GrADS software. However, run cbar or set gxout bar kind of commands does not work. How can I possibly add a bar into my plot in GrADS. Below is attached my plot created using…
ibrahim erkol
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How to write in GrADS-readable binary format using python?

I have been trying to export data stored as numpy array to GrADS-flat binary. It seems GrADS does not recognize Z dimension given in the .ctl file. Whatever value I use for 'set z integer', GrADS only shows the first level. Here is the minimal…
iyui
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How to fetch the data date wise from netCDF or .grd file in CDO software?

I have data files of min/max temperature in .grd or netCDF format. From these files, I want to fetch the data date wise for India lat/long points only using CDO or grADS software. The data format…
Rohit Sharma
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How do I fix this grads script?

This is my gs file. 'xloc = aminlocx(slp,lon=120,lon=135,lat=20,lat=30)' 'yloc = aminlocy(slp,lon=120,lon=135,lat=20,lat=30)' 'lonn = 39.58386 + 0.22522523*(xloc-1)' 'latt = -8.64826 + 0.22522523*(yloc-1)' 'lonmin = lonn-1' 'lonmax =…
도건우
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Opening of Shapefile in Grads

I have shape file (abc.shp, abc.shx, abc.dbf) in my SampleDatasets folder. When I try to open this shapefile in Qgis it is opening well but when I call this shape file in Grads then it is not opening. please help me to use correct command. thanks in…
Anwar Husain Warsi
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Save Data to text in grads After the print command

In the grads software After importing the geopotential data, we use the print command to display the data on the page. Is there a way to save this displayed data as text? set gxout print Output Taking Geopotential Values to Text File sdfopen…
karbalaee
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Loop through multiple netcdf files

I would like to loop through multiple netcdf files in GrADS. The files run from May 1, 2018 to June 30, 2018 named as: 2018050100.nc...2018063000.nc The function is to regrid the netcdf files to 0.17 degrees. How do I do this?
user2543
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open folder with ctl files in grads

can you i'm having trouble opening multiple ctl files in grads. The folder contains 20 ctl files and i'd like not to open them one by one. Unfortunately open pathfolder does not work. Any ideas please?
akis
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Display user specified contour levels in GrADS

I would like to know how to display specific contour levels on the colorbar. For example, as shown in the schematic above taken from pivotalweather, shows a colorbar for precipitation values that are not really equally spaced. I would like to know…
Kushal
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How to plot specific value in GrADS

I have found this link on plotting variable in GrADS and yes, the manual is poorly written. I want to plot values equal to zero only. Say I have anomaly from -10 to 10 and I want to extract and plot the contour of absolute zero only, how can I do…
user2543
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how to open 3 input files one by one without opening grads?

I have a some dat files which I have generated using java code. I have 3 different input files to show images in grads. I have written a .sh file which first executes my java program and then opens grads. Now to execute 3 files in grads, I write…
Kavita Navria
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