Access Raster Function Template in ArcGIS Online
Greg
You had me stumped for a while - I could not understand how you got that menu without the Display options - but I think I figured it out.
I believe you saved an MXD and then pulled down File/Share As (see screenshot) - is that correct?
That publishes a MAP service, not an Image service. If you check your service endpoint, (see screenshot) you'll see "MapServer" not "ImageServer" (see my 4th service, vs. the 2nd one).
To publish an image service, you can select the Mosaic Dataset or image file in ArcCatalog and then right click to "Share as Image Service". (In the UI for publishing the Image Service, you'll see "Functions" where you can add more functions onto the service if you did not add them onto the Mosaic Dataset prior to publishing)
Let me know if you need more detail
Cody B.
Cody,
Thank you for your quick reply. The image service was published from the catalog window as you describe in your last paragraph. I added the raster function in the UI and set it to draw the shaded relief by default. I think the problem may be that I already have a shaded relief function on my mosaic dataset to begin with and probably didn't need to add it again on the image service.
By the way, some of your presentations and documentation are what got me this far, so thank you for that!
If my previous guess was wrong, then it appears you must have selected "Draw this image service using tiles from cache" in the caching tab when you published it. Can you confirm?
This generates raster tile cache, which is the same as the imagery seen in ArcGIS base maps (as well as Google, Bing, etc.) - this is the fastest mode for serving imagery, but it's fast because the imagery is pre-rendered and the server simply looks up the tiles and transmits them. It is no longer a dynamic image service, so changing raster functions is no longer possible.
In either a map service or a cached image service, under the layer, there are 3 dots to pull down "more options", but none of the other modes that appear on a dynamic image service - e.g. see below - where you would have icons for "Show Legend", "Show Table", "Filter" and also the 3 dots for "more options" where you'll be able to select any server raster functions that are available.
I should verify - is the shaded relief working properly, and your concern is that you'd like to be able to disable it, or select other functions? If you need other functions, you'll need to republish as a dynamic image service (and you may want to find and delete the cache that had been generated). If all you will ever want is the shaded relief, the cached service should work for you.
Cody
I have a question related to my previous GeoNet thread on
image services and functions. I’ve published an image service of a digital
surface model that has a function to change the view to height above ground.
The popup has been configured to show the Item Pixel Value but that always
seems to return the raw LiDAR point value instead of the height above ground
(calculated through an arithmetic function as surface model height minus bare
earth elevation multiplied by 3.28 to convert meters to feet). For example, the
building shown in the attached image is 16 feet tall. The 77.05 shown is the top of
building height plus ground elevation in meters, so my arithmetic
functions are being ignored.
My question is, when changing from one image service
function to another in a web map, is it possible to have the Item Pixel Value
change in order to reflect the new pixel values? I appreciate any help you can
offer.
Greg
Good question! Yes you can do this.
You want the SERVICE pixel value, not the ITEM pixel value. The Service value includes any functions which are applied - so in your case the value returned is Height Above Ground. In the screenshot below, you set the popup to "Display a list of field attributes and then select "Configure attributes" to get the UI shown, then turn on the Service pixel value. (I left the ITEM pixel value on as well).
notice that the default label is "Service Pixel Value" but in my second screenshot, you see that text can be selected and changed, so the popup will be labeled "HeightAboveGround"
In the AGOL World Elevation service, we don't have height above ground, so below I show a similar example but reporting the slope in degrees as well as the ground elevation:
