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; } } }

Update DEM or elevation data

BrianLomas

Is there a way to update/change a DEM file or some kind of elevation layer which I could use as a terrain? Basically, I have a DEM which has current elevation and I have a 3d multipatch polygon which represents a road that will be built. The road construction will change the landscape which is represented in the multipatch polygon. I need the elevation of the multipatch to be represented in the terrain as well as the surrounding areas current elevation. I hope that makes sense.

I included a picture and you can see where the road is intersected by the terrain. Thanks for the help.

ArcScene.JPG

Encuentra más publicaciones etiquetadas con

Accepted answers

BrianLomas

I started from scratch by matching scales between the two files, then matched projections, then used the "mosaic to new raster" tool; this seemed to work. Thanks a lot for pointing me to in the right direction guys, you were a big help.

All comments

DanPatterson_Retired

Another way...

for all steps set using tools in arctoolbox, set the analysis extent to be of the largest raster,
set the snap raster to it, and the cell size as well
export the smaller raster to a new copy (right click, on the layer, data export) which will have the larger extent setting the nodata value to zero
Add them together

BrianLomas

Yea, when I did that it seemed to only change the converted multipatch raster.

JayantaPoddar

Did you try step 2 that I suggested?

BrianLomas

This wouldn't solve my problem because if I raise the multipatch is would cause a gap b/w the raster and the road (multipatch) in some places. The multipatch is 3d as well. Thanks for the reply though.

BrianLomas

I converted the multipatch to a raster. Is there a way to combine or merge the two rasters together, overriding the existing raster's info only where the new raster overlaps?

DanPatterson_Retired

if it is a visual thing, then you can simply use an offset from the dem once you done the draping it. This works quite well in most area when placing 2D vector data over DEM data

JayantaPoddar

Hi Brian,

You could follow these steps.

1) Convert the multipatch to Raster. Keep the XY Resolution (cell size) same as that of the DEM.

Multipatch to Raster—Help | ArcGIS for Desktop

2)Now if I want to add up the value of "New_DEM" with the old "DEM" raster, I would use Raster calculator (Spatial Analyst) with a similar expression:

("New_DEM" + "DEM")

Únete a la Conversación

Los miembros registrados pueden publicar, seguir actualizaciones y más. ¿Nuevo aquí? Regístrate gratis.

Iniciar Sesión
Registrarse

Enlaces Rápidos

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