[gdal-dev] Question regarding Shapefile Geo-cordinates

Robert Hewlett rob.hewy at gmail.com
Tue May 9 12:57:44 PDT 2023


Hi,

Different from what I originally thought.

Does the image below demonstrate the problem?
https://i.imgur.com/lAMwZmG.png

Looks like a scale issue as well.

Rob



On Tue, May 9, 2023 at 12:13 PM Vijay Kurhade <vijay.kurhade at gmail.com>
wrote:

> Hi Robert;
>
> I am sharing a shape file and AutoCAD (.dwg) file. I have geo-coordinated
> the CAD file and then converted it into .shp file using following steps:
>
> 1)      Selected ‘geographic location’ option in AutoCAD
>
> 2)      Entered latitude (18.5652) and longitude (73.7888) and elevation
> (606 meters)
>
> 3)      Selected ‘GIS coordinate system’ as ‘WORLD-MERCATOR(WGS84)
>
> 4)      Selected time zone as ‘GMT+5:30 Chennai, Kolkata, Mumbai, New
> Delhi’
>
> 5)      Drawing unit ‘Inches’
>
> 6)      Selected geo-graphic location in the AutoCAD drawing
>
> 7)      Specified the north direction angle. Repeated the above steps to
> mark three more geographic locations in the CAD file
>
> 8)      Saved the CAD file and converted it into shape file using online
> tool ‘https://mygeodata.cloud/conversion’
>
>
> I hope this helps you in analyzing the issue.
>
>
> Regards-
>
> Vijay
>
> On Tue, May 9, 2023 at 6:08 PM Robert Hewlett <rob.hewy at gmail.com> wrote:
>
>> It sounds like the lat and longs are being plotted as Web Mercator
>> meters. I could be wrong
>>
>>
>> Is there a .PRJ file?
>>
>> How are you viewing the data:
>> QGIS
>> Open layers
>> Leaflet
>>
>>
>>
>> On Tue, May 9, 2023, 04:55 Vijay Kurhade <vijay.kurhade at gmail.com> wrote:
>>
>>> Hi;
>>>
>>> I have a long pending issue with Shapefile and using proper
>>> Geo-coordinates for it;
>>> i need to place it in Pune, India with actual 4 Geo-Coordinates but
>>> everytime My shapefile gets placed into earth's center mostly Africa.
>>>
>>> What is the solution; How can I ensure the shapefile uses those lat/long
>>> 4 coordinates and is placed on Pune, India in Map rather than somewhere
>>> else?
>>>
>>> Thanks in Advance.
>>>
>>> Regards-
>>> Vijay
>>> _______________________________________________
>>> gdal-dev mailing list
>>> gdal-dev at lists.osgeo.org
>>> https://lists.osgeo.org/mailman/listinfo/gdal-dev
>>>
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>
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