topic Re: Creating elevation raster from point data in 3D Mapping Questions https://community.esri.com/t5/3d-mapping-questions/creating-elevation-raster-from-point-data/m-p/845255#M680 <HTML><HEAD></HEAD><BODY><P>Jane as Dan mentioned there are many things to consider, I tend to use different algorithms / interpolations until I find one that fits "best". There are many parameters and variables you can play around with ... have a play to find what you need.</P><P></P><P>There is also a merge tool for rasters. I'd be careful of any overlap here though, so probably best to ensure that they don't overlap.</P></BODY></HTML> Wed, 29 Apr 2015 07:13:02 GMT PeterJones 2015-04-29T07:13:02Z Creating elevation raster from point data https://community.esri.com/t5/3d-mapping-questions/creating-elevation-raster-from-point-data/m-p/845252#M677 <HTML><HEAD></HEAD><BODY><P>I have a raster elevation model above sea-level and a point feature class for the bathymetry in fjords and ocean, with quite varied density of the points.</P><P>Any ideas on how to combine the information from both datasets into one new raster layer containing elevation information above and below sea-level?</P><P>I am running arcmap 10.2 with spatial analyst and 3D analyst toolboxes.</P></BODY></HTML> Tue, 21 Apr 2015 07:13:18 GMT https://community.esri.com/t5/3d-mapping-questions/creating-elevation-raster-from-point-data/m-p/845252#M677 JaneB 2015-04-21T07:13:18Z Re: Creating elevation raster from point data https://community.esri.com/t5/3d-mapping-questions/creating-elevation-raster-from-point-data/m-p/845253#M678 <HTML><HEAD></HEAD><BODY><P>many options...which give rise to questions</P><UL><LI>why do you need a raster as output?</LI><LI>do you just want the values from both files, just at the locations where the points are?</LI><LI>give the one above, do you want estimates of seabed bathymetry?</LI><LI>can I assume that you have nodata values in the fjords and the ocean area in general are those areas assigned a value of zero</LI><LI>got a picture/image?&nbsp; further suggestions regarding things like interpolation will depend upon the nature and distribution of your point data to infill/estimate the areas between intervening locations</LI><LI>what is the accuracy of the seabed depth measures relative to their range (and any other quantitative measures for said data</LI><LI>could go on...but won't...more questions will arise until the scenario is clearer</LI></UL><P>back to you...</P></BODY></HTML> Tue, 21 Apr 2015 07:26:53 GMT https://community.esri.com/t5/3d-mapping-questions/creating-elevation-raster-from-point-data/m-p/845253#M678 DanPatterson_Retired 2015-04-21T07:26:53Z Re: Creating elevation raster from point data https://community.esri.com/t5/3d-mapping-questions/creating-elevation-raster-from-point-data/m-p/845254#M679 <HTML><HEAD></HEAD><BODY><P>Hi Dan,</P><P>Thanks a lot for your answer that got me on track for a solution.</P><P>I have now solved the problem using an inverse distance algorithm.</P><P>Jane</P></BODY></HTML> Mon, 27 Apr 2015 11:41:50 GMT https://community.esri.com/t5/3d-mapping-questions/creating-elevation-raster-from-point-data/m-p/845254#M679 JaneB 2015-04-27T11:41:50Z Re: Creating elevation raster from point data https://community.esri.com/t5/3d-mapping-questions/creating-elevation-raster-from-point-data/m-p/845255#M680 <HTML><HEAD></HEAD><BODY><P>Jane as Dan mentioned there are many things to consider, I tend to use different algorithms / interpolations until I find one that fits "best". There are many parameters and variables you can play around with ... have a play to find what you need.</P><P></P><P>There is also a merge tool for rasters. I'd be careful of any overlap here though, so probably best to ensure that they don't overlap.</P></BODY></HTML> Wed, 29 Apr 2015 07:13:02 GMT https://community.esri.com/t5/3d-mapping-questions/creating-elevation-raster-from-point-data/m-p/845255#M680 PeterJones 2015-04-29T07:13:02Z