topic Re: CoordinateConversion widget - how to add z-value to added format which is not wgs84 in ArcGIS JavaScript Maps SDK Questions

CoordinateConversion widget - how to add z-value to added format which is not wgs84

MichaelLev — Fri, 29 Jan 2021 04:31:14 GMT

I'm using ArcGIS API for javascript version 4.18 CoordinateConversion widget to display mouse coordinates cocurrently for several cordinate systems. I'm following ESRI's code example in CoordinateConversion widget - Custom Formats page.

This page shows how to add 2 new formats, one is wgs84 with "z", the 2nd is some TM format.

I want to add "z" also with the 2nd format, but I have not succeeded, as I'm new to this area.

I'll appreciate help.

Re: CoordinateConversion widget - how to add z-value to added format which is not wgs84

Noah-Sager — Fri, 29 Jan 2021 17:54:18 GMT

Hi @MichaelLev, I think there are two answers here. First, it looks like the second custom format (spatial reference: 102241) does not support the vertical dimension.

https://desktop.arcgis.com/en/arcmap/latest/map/projections/fundamentals-of-vertical-coordinate-systems.htm

https://desktop.arcgis.com/en/arcmap/latest/map/projections/pdf/geographic_coordinate_systems.pdf

But if it did support the vertical (z) coordinate system, then I think you would only need to add the z: parseFloat(parts[2]) to the state plane's conversionInfo.

Hope this helps!

Re: CoordinateConversion widget - how to add z-value to added format which is not wgs84

MichaelLev — Sat, 30 Jan 2021 13:01:32 GMT

Hi @Noah-Sager , my 2nd coordinate system is not wkid:102241 but wkid:2039.

I added z: parseFloat(parts[2]) to the conversionInfo and has not got z dimension, and this was the reason why I opened this question.

After reading your answer, I searched the pdf mansioned by you, and wkid:2039 is also not mentioned in that pdf in the table of coordinate systems that support vertical dimension. So, this is indeed the reason why I can't get z for wid:2039.

Thank you