[gdal-dev] Question regarding Shapefile Geo-cordinates

[Robert Hewlett]

Hi,

Sorry for the late reply, Still marking and meetings on this side of the
globe:

I used the site to go from dwg to dxf.

Then used ogr2ogr at the command line

ogr2ogr --version
GDAL 3.6.4, released 2023/04/17

ogr2ogr -a_srs "EPSG:4326" -f "ESRI Shapefile" ^
-gcp 12.8973 4.8524 73.7737714009421 18.546875366193724 ^
-gcp 8.75204 17.21844 73.76355401367982 18.57499038261755 ^
-gcp 23.7272 8.4155 73.79942967064645 18.55509638758041 ^
-gcp 14.3373 21.9502 73.7767221307843 18.58772458615475 ^
-skipfailures ^
shp_out geocoordinated_Pune_baner_Map.dxf

The gcps need work and I am not familiar with the area. Feels like some new
bridges and roads.

I got closer
https://i.imgur.com/PhaXlrE.png

-gcp 12.8973 4.8524 18.546875366193724 73.7737714009421 #Pashan HWY Sus Ln
-gpc 8.75204 17.21844 18.57499038261755 73.76355401367982 # Hwy 48 and
Balewadi
-gpc 23.7272 8.4155 18.55509638758041 73.79942967064645 # Baner Prathamesh
Park RD
-gpc 14.3373 21.9502 18.58772458615475 73.77672213078434 # Balewadi wakad
bridge

On Wed, May 10, 2023 at 11:54 PM Vijay Kurhade <vijay.kurhade at gmail.com>
wrote:

> Hello
>
> 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’
>
>
> Link to files :
> https://drive.google.com/drive/folders/1xylPKQy0uJM3zbcqyxdvdSnxCaFh8lox?usp=share_link
>
>
> I hope this helps you in analyzing the issue.
>
> Thanks in Advance.
>
> Regards-
> Vijay
>
> 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
>>>>
>>> _______________________________________________
>>> gdal-dev mailing list
>>> gdal-dev at lists.osgeo.org
>>> https://lists.osgeo.org/mailman/listinfo/gdal-dev
>>>
>> _______________________________________________
> gdal-dev mailing list
> gdal-dev at lists.osgeo.org
> https://lists.osgeo.org/mailman/listinfo/gdal-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/gdal-dev/attachments/20230512/451fec50/attachment-0001.htm>