nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

WGS84, alternative projected coordinate system for using osm together with data

AndreasGriessbach

Hallo everybody, I know I asked many questions during the last weeks. I use Arcmap intensely for my point of knowledge sins this time and now I have another problem:

I need the openstreetmap-map in the background. The osm coordinate system is WGS84 (geographic coordinate system) obviously. Therefor I used the WGS84 grid for my other shape-layers, too.

I used the near-tool and I wondered about the wrong distances. I found out, that the output was a result of the wrong unit because of a geographic coordinate system (WGS84). So I think I need a projected coordinate system, which is suitable to osm, isn’t it.

When I changed the coordinate system e.q. to the national grid WGS84 world Mercator or GERMANY 3 Zone my layers didn’t fit to the osm-background anymore.

Please in case of any idea, give me an advice.

Thanks a lot, Andreas

Vind meer berichten getagd met

Accepted answers

JayantaPoddar

If your data (shapefile) is in GCS_WGS_1984, you need to use Project (Data Management) tool to reproject the data from GCS_WGS_1984 to WGS84_Web_Mercator.

DO NOT use Define Projection tool or change the coordinate system from Feature class Properties (in ArcCatalog).

All comments

AndreasGriessbach

a little supplement: I could transform many layers with the Project-tool. But I had one shape-layer, made from a xy-excel-table, with many columns and rows. The transformation with the arcmap project-tool was not successful. The error 999999: Error executing function came.

my solution: I imported the Excel table again (File > Add data > add xy data) at first with the wgs84 coordinate system. Therefore the shown elements fitted to the osm-map. Afterwards I exported them in the WGS84 Web Mercator (Auxilary Sphere) shape-format: check if the data fram is in the target format (WGS84 Web Mercator (Auxilary Sphere), right click on the layer in the table of content > data > export data > “use the same coordinate system as”: the data frame > ok

AndreasGriessbach

Hi Jayanta,

You are so great!!! It works! You were so right: I changed the coordinate System only in the catalog. Now I am very happy, thanks to you.

A last question, hopefully: The result of the Project-tool-process is a new layer. But this layer is not a additional shape-file. What is it else? Can I delate the "old" shape from my project?

Thanks so much, again.

Andreas

GIS_Solutions_2-1663140071724.png

JayantaPoddar

If your data (shapefile) is in GCS_WGS_1984, you need to use Project (Data Management) tool to reproject the data from GCS_WGS_1984 to WGS84_Web_Mercator.

DO NOT use Define Projection tool or change the coordinate system from Feature class Properties (in ArcCatalog).

AndreasGriessbach

Hallo Jayanta, nice that you are answered again to my question like yesterday. Thank you so much!!!!

Unfortunately the WGS84 Web Mercator (Auxilary Sphere) doesn't fit. Zooming on the layer after changing the coordinat system I was located in the Atlantic Ocean west of Africa.

JayantaPoddar

Try using EPSG:3857 -- WGS84 Web Mercator (Auxiliary Sphere).

Let us know your observation.

Doe mee aan het gesprek

Aangemelde leden kunnen berichten plaatsen, updates volgen en meer. Nieuw hier? Registreer een gratis account.

Snelle Links

Community Help
Find useful guides, FAQs, and documents to help you navigate and make the most of Esri Community.