[gdal-dev] Question regarding Shapefile Geo-cordinates

[Vijay Kurhade]

Hi Rob;

You are a rockstar; yes this is very much close indeed; have struggled for
weeks and never managed to get it out of the center of the globe(African
continent).
Sincerely appreciate so much efforts you have put to help me with direction
and help.

Have a great weekend and beyond.

Regards-
Vijay

On Sat, May 13, 2023 at 12:24 AM Robert Hewlett <rob.hewy at gmail.com> wrote:

> 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
>>>>>
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