how could import dtm and dsm on gis 10.4.1?
From what? But maybe this?....
Please specify in what format you have the DTM and DSM data.
I will send the image what could i do now for import
did it come from Golden Software ... grd is one of their file extensions.... supported raster formats It is a supported file format, but they don't indicate whether you need the Spatial Analyst extension to use it... but try it in arcmap with the Add Data button first
YES IS THE SAME QUESTION
ON ARCMAP IS NOT IMPORTED HOW CAN I DO ?
CAN YOU HELP WITH ONE VIDEO IF YOU HAVE EXAMPLE FOR THE RIGHT STREET
your caps lock is on...
couldn't find any videos...sorry
can you send me one idea what can I do?
I might be easier to help you if you could share a sample file.
give me the email and I will send my file
I have unmarked my answer as the correct one, since no solution was provided. Is the file very large or is it not possible to attach a sample file to the thread? You will have a higher chance to get a solution if more than a single person have access to this file. If you are not allowed to share it publicly, I can provide my contact info.
ok give me your contact info
You can send me an email using xander_bakker [at] yahoo.com
I send te file now ......
ok I send now you can see .....
Sorry for the delay. The file can be read without any problems into Desktop (see screenshot in ArcMap below) no conversion required:
The steps are easy, assuming you have ArcMap or ArcGIS Pro:
1) In ArcMap, click the add data button:
2) navigate to the folder where the file is or files are stored, select the file and click on the Add button:
As a result the file will be added to the TOC and you can start to manipulate the file. Please note that the file as you shared does not have a projection and you should use the Define Projection—Help | ArcGIS Desktop tool to assign the appropriate projected coordinate system.
As far as I can tell the raster is a classified raster where you will only have values in steps of 100m (no intermediate values). To get something "useful" you may need to extract the contours every 100 meters with Contour—Help | ArcGIS Desktop followed by Topo to Raster—Help | ArcGIS Desktop to interpolate the contour lines and create a real DEM.
.....but try it in arcmap with the Add Data button first ....
suggested before in an earlier post of mine...
I wonder why it didn't work before???
I have arcmap I will try
yes its open on arcmap but i have try to import lat,lot point but inst simple for import and
what can I do for this import point in dtm or dsm ?
I believe the the original question on how to open the file in ArcMap has been resolved, basically with the suggestion that Dan Patterson made earlier in this thread "but try it in arcmap with the Add Data button first", which worked. I added some images to make it more visual, and detected some problems with the data.
As far as I understand, you have a follow-up question about the coordinates and mention importing a lat, lon point. I guess you refer at defining a coordinate system since the data has coordinate which range from 39,281,738 to 39,377,938 in X (lon) and 458,760,736 to 458,785,736 in Y (lat):
Those are very high values for coordinates. Normally when you obtain data the data will be accompanied by some metadata explaining the content and in this case the coordinate system. You should ask the owner of the data when spatial reference and units have been used for this dataset. Only then you will be able to assign the correct coordinate system to the data (so it will know its location in the surface of the earth) and you are able to project the dataset into another coordinate system in you you require geographic coordinates (lat and lon). If you do not have information about the data and its coordinate system you will need to "guess" which coordinate system it is, by using knowledge of the area it describes with all the possible consequences of errors. The other aspect still remains; the dataset is not really a DEM or DTM. It is a classified derivative and should be treated as such. For example you cannot create a slope map from this raster or calculate aspects or do any hydrological analysis on it.Be aware of that.
why I cannot create slope map ect ?
Because Xander said it is not a file that contains raw elevation data. He said it is classified, hence it isn't in its original form and can't be used for the purpose for which you want
Simple, the raster does not represent the surface. It is classified and as such an derivative will be incorrect. Let me show this visually:
The upper part is the DEM/DTM with a continuous scale of colors, however you see the "breaks" in the values since it is classified data. The lower part is the slope. Large areas are flat and only at the part where the class changes the slope has high values.
can you help with video
YouTube in general, and the ESRI channel there have lots of videos. Perhaps you can find something there on DEM basics that suits your learning style
In additional to YouTube videos, if you are on maintenance you have access to a lot of resources on the training site:
Just search for "raster" and mark ArcMap and ArcGIS Pro:
... and you will get a large list of course material (most of them are free).
https://www.esri.com/training/catalog/57630435851d31e02a43f084/deriving-rasters-for-terrain-analysis-using-arcgis/ and https://www.esri.com/training/catalog/57630436851d31e02a43f18f/terrain-analysis-using-arcgis-pro/ will tell you how to perform terrain analysis.
Perhaps it would be good to start with: https://www.esri.com/training/catalog/57630431851d31e02a43ee4f/basics-of-raster-data/ and https://www.esri.com/training/catalog/57630437851d31e02a43f252/displaying-raster-data-using-arcgis/
Additionally there is a tutorial for Spatial Analyst About the ArcGIS Spatial Analyst Tutorial—ArcGIS Help | ArcGIS Desktop
WHY THE VIDEO CAN NOT OPEN ?
are there any restrictions on you accessing web materials?
ALL VIDEO OF TRAINING THAT I WANT TO SEE FOR EXAMPLE
Strange, all media links open for me:
Since the links includes an ID, perhaps these are different per user. So follow the steps provided (if you haven't already):
thanks but I have arcgis 10.4.1 not Arcgis pro
what can I do
Filter the results on ArcMap (not on ArcGIS Pro)
which is keyword (raster)?
As posted before, when you go into the search page you will have to specify raster as indicated below:
You will search on "raster" and you can filter the results on any application. In your case you will not select ArcGIS Pro (as indicted in the image), but only "ArcMap".
sory but I am try to find video but nothing all are lock and what can I do
sorry but I am try to find video but nothing what can I do...
Are you able to login to the training site?
OK, and can you share a screenshot of the results when you search for Raster and filter by ArcMap? Are all results locked?
Are there any restrictions in your location on downloading videos?
can you download any videos and view them?
Are you trying to access them from home or work?
look if are....
If your account is linked to an organization that has ArcGIS Software on maintenance there will be many more resources available to you.
If not, as Dan mentioned before you can see some videos on Youtube and for instance this video came up: Terrain Analysis Exercise 1: Calculating Terrain Attributes - YouTube (when I searched for "terrain analysis ArcGIS"). Although it references a tutorial related to LiDAR data, you can see how slope, aspect and other products are derived.
In addition this explanation form the Help page:
Many e-Learning resources in our catalog are open to everyone. These resources are indicated with the “FREE” label. To take any of the free e-Learning resources, you simply need to login with your Esri Account.Individuals who have, or are members of an organization that has, an Esri qualifying product with a current maintenance subscription have unlimited access to all e-Learning resources in our catalog. Learn how to take advantage of this benefit.
Many e-Learning resources in our catalog are open to everyone. These resources are indicated with the “FREE” label. To take any of the free e-Learning resources, you simply need to login with your Esri Account.
Individuals who have, or are members of an organization that has, an Esri qualifying product with a current maintenance subscription have unlimited access to all e-Learning resources in our catalog. Learn how to take advantage of this benefit.
COULD SEND ME THE ORIGINALLY VIDEO OF THIS VISUALLY
What video are you referring to? Is it this one that I included 7 months ago? Terrain Analysis Exercise 1: Calculating Terrain Attributes - YouTube
i want to see this video....could you help?
I don't have a video of that process, but the steps would be very simple. The problem is that the file that you have does not have valid data to generate the slope map. Unless, you have a different data set now (a lot can happen in 7 months).
i will send dtm file may help me for define projection for more attach
material ... can you send me the video ... so i understand more better
Can you share the location of the raster? It would be best to ask those that provided the raster what coordinate system has been used to avoid having to guess the spatial reference.
Sent from my Samsung Galaxy smartphone.
Retrieving data ...