[gradsusr] converting coordinates

[Subhadeep Halder]

Dear users,

In grads, we have many conversions like xy2w, xy2gr, w2xy, w2gr, gr2w,
gr2xy, ll2xy, pp2xy.

What is the difference between these different co-ordinate systems like,
world coordinates, grid coordinates, XY coordinates, LON/LAt coordinates and
page coordinates ?

Can anyone having idea about these explain me?

thanks and regards,

Subhadeep
IITM, Pune, India.
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