topic Re: Hillshading question- Start from a JPEG in Mapping Questions

Hillshading question- Start from a JPEG

MartinHolicka — Tue, 22 Jul 2014 15:22:09 GMT

Hello everyone!

I am looking for some help..

A family member has asked me to hillshade a map for them. The problem is that I have only been provided a JPEG and co-ordinates of each of the corners. For hillshading, I know i need a DEM, but then i have 2 questions

1. How do I make the DEM be the exact co-ordinates of the JPEG?

2. Can I then use this hillshaded DEM and overlay the needed information from the JPEG?

Thanks,

Martin

Re: Hillshading question- Start from a JPEG

stefanstamenov — Thu, 24 Jul 2014 20:27:36 GMT

What kind of map?

Re: Hillshading question- Start from a JPEG

stefanstamenov — Thu, 24 Jul 2014 20:34:45 GMT

You can creat DEM from topographic map if you georeference it and digitize the isolines and altitude points making a shape files for example. Then you can use "topo to raster" function in ArcGis Desktop.

Re: Hillshading question- Start from a JPEG

DanPatterson_Retired — Thu, 24 Jul 2014 20:44:00 GMT

Your simplest solution is to try to locate a DEM for your area and you can hillshade it if you have the Spatial Analyst or 3D Analyst extension.

Re: Hillshading question- Start from a JPEG

RajinderNagi — Mon, 22 Jun 2015 23:04:26 GMT

You can connect to Esri World Elevation Services and use hillshade function. These are dynamic image service render derivatives on-th-fly, you don't need to store, process, manage DEM or derivatives locally. More here: Introducing Esri’s World Elevation Services | ArcGIS Blog