[Qgis-user] QGIS 1.7.4 Wroclaw to Mapinfo: adivice please

[Bo Victor Thomsen]

Robert -

How does the Coordsys clause in your new "shape" mif/mid file looks like 
? (Open the new mif file in notepad, look at line 4)

Is it the same as the Coordsys clause in the tab file for the jpg ?

Regards
Bo Victor Thomsen
Aestas-GIS
Denmark

Den 09-10-2012 10:53, BTinternet skrev:
> As a non-expert newcomer to QGIS I would most grateful for the forum's 
> advice.
> I have the task of taking TAB and JPG files created by a client in 
> Mapinfo and drawing on them vector items using QGIS - and then 
> returning the resulting SHP files (or SHP converted to Mapinfo MIF/MID 
> files) to the client.  When I do this, however, the client declares 
> that, the CRS for the resulting SHP or MIF/MID files are non-existent 
> or wrong.
> For example, Mapinfo TAB and associated JPG files was sent from my 
> client.  If I look at the TAB file in Notepad, I see that the data are 
> as follows:
> !table
> !version 300
> !charset WindowsLatin1
> Definition Table
>   File "03sw.jpg"
>   Type "RASTER"
>   (512232,306415) (88,176) Label "Pt 1",
>   (517111,303237) (5484,3782) Label "Pt 2",
>   (512816.96000000002,303710.67999999999) (732,3234) Label "Pt 3",
>   (516970.09000000003,306367.07000000001) (5436,339) Label "Pt 4",
>   (513415.08000000002,303400.54999999999) (1389,3578) Label "Pt 5"
>   CoordSys Earth Projection 8, 79, "m", -2, 49, 0.9996012717, 400000, 
> -100000
>   Units "m"
> When I open the JPG in QGIS, I see that the CRS for the JPG is 'User 
> Defined' and has the following definition:
> +proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 +x_0=400000 
> +y_0=-100000 +ellps=airy +towgs84=375,-111,431,-0,-0,-0,0 +units=m 
> +no_defs
> /*At this point, I'm not too sure whether or not QGIS has correctly 
> interpreted the CRS for the Client's JPG.  Can anyone help me on this 
> please?*/
> When I create a SHP vector layer on top of the JPG, I make sure that 
> it has the same 'User Defined' CRS as above and save the SHP layer as 
> Mapinfo-useable MIF and MID files.  Looking at the MIF file in 
> Notepad, I can see that the coordinates (shown bottom right in QGIS) 
> of the vector file agree exactly with the original JPG raster.
> When the MIF/MID files are opened by my Client however, the files are 
> unusable because the CRS is 'non-existent or wrong'
> *Can anyone point out where I'm going wrong please?*
> Best regards
> Robert Beasley
>
>
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