[UMN_MAPSERVER-USERS] wrong with coordinate conversion

[Stephane Lessard]

Try:

X = (map_maxx - map_minx) * (image_click_coord_x / image_width) + map_minx

And

Y = (map_maxy - map_miny) * (image_click_coord_y / image_height) + map_miny

HTH
Stef



> -----Message d'origine-----
> De : temiz [mailto:temiz at DEPREM.GOV.TR] 
> Envoyé : 5 novembre 2004 09:35
> À : MAPSERVER-USERS at LISTS.UMN.EDU
> Objet : [UMN_MAPSERVER-USERS] wrong with coordinate conversion
> 
> 
> hello
> 
> For using reference map with php mapscript, I have developed
> a formula to convert image coordinates to map coordinates.
> But there seems to be something wrong with it.
> 
> here is the formula:
> "map_coord of a clicked point = (map_maxx - map_minx) * 
> image_click_ccord / image_width"
> 
> what am I doing wrong ?
> 
> kind regards
> 
> Ahmet Temiz
> 
> 
> 
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