[gradsusr] Converting the grid with conditional loop in grads

[Andrew Friedman]

Hi,

You should be able to do all this in GrADS.

If you haven’t, I recommend updating to at least version 2.1.1.b0, which introduced easier logical scripting expressions:
http://cola.gmu.edu/grads/gadoc/expressions.html
See the example here: 
http://gradsusr.org/pipermail/gradsusr/2017-February/040717.html

-Andrew

> On Dec 28, 2018, at 4:04 AM, Jayakrishnan P.R <prjayakrishnan at gmail.com> wrote:
> 
> 
> Dear All,
>          I have a gridded data of population globally from 1950 to 2005. I wanted to do as follows.
> 1) Convert the grid into three different types.
> ie 
> Type 1 grid>>> Display those grids if greater than value 10000 in the year 1950 and greater than value 10000 in the year 2015..
> Type 2 grid  Display those grids if value less than 10000 in the year 1950 and greater than 10000 in the year 2015...
> Type 3 grid Display those grids if less than value 10000 in the year 1950 and less than value 10000 in 2015
> Any thoughts in grads will be appreciated....Can we do this using maskout function, constant function and if else statement ?. I am unable to do it in grads. Trying to do in mathlab...
> Jayakrishnan 
> 
> -- 
> Sincerely
> 
> **************************************************
> Dr. Jayakrishnan P.R
> Post Doctoral Research Fellow
> Science Technology Building
> School of System Science
> Beijing Normal University
> No. 96 XInjiekouwai Street
> Beijing 100875
> China
> Tel: +86-188 11005715
> 
> ****************************************************
> 
> 
> 
> 
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