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From: steve@groucho.ucar.edu (Steve Emmerson)
Newsgroups: comp.graphics
Subject: Re: GKS
Message-ID: <11981@ncar.ucar.edu>
Date: 29 Jun 91 03:47:14 GMT
References: <1991Jun28.223326.28405@milton.u.washington.edu>
Sender: news@ncar.ucar.edu
Organization: University Corporation for Atmospheric Research (UCAR)
Lines: 21

In <1991Jun28.223326.28405@milton.u.washington.edu> pramodmm@milton.u.washington.edu (Pramod Mahadev) writes:

>Hello GKS Xperts
>I have a small problem with the coordinate systems .
>When my program reads the locator position instead
>of the position i.e x and y coordinates being in
>world coordinates ; they are in device coordinates.
>Please enlighten me as to how to get the program output
>world coordinates instead of either DC or NDC coordinates
>I am using the subroutine GRQLC(wkid,lcdnr,stat,tnr,px,py)
>where px and py are supposed to be in world coordinates but
>my program returns device coordinates.

If GRQLC() is returning OK rather than NONE, then the response should be
in world co-ordinates, and not normalized device co-ordinates.  I believe
anything else indicates a bug in your GKS implementation.

Credentials: I maintain XGKS.  (That and 35 cents gets me a cup of coffee.
;-)

Steve Emmerson        steve@unidata.ucar.edu        ...!ncar!unidata!steve