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Time-Aware Raster Catalog Images Not All Showing

RyanCoodey

We have a raster catalog of about 30 images... each image has a start and end time attribute over a span of approximately 30 days (no time periods overlap). I have served these up on ArcGIS Server as a single layer in both a MSD and a MXD (since image server does not support catalogs).

If I try and use the "Export Map" operation I have some issues. With no time specified, one of the images always shows up. But if I specify an Epoch time that I know for sure is associated to one of these images time spans, only about 2 out of the 30 images will show for their corresponding time.

Any ideas why the images won't all show? It works fine with the time slider in ArcMap... some type of caching limitation with the REST API maybe? I want to use the time slider in Silverlight and it is producing the same results since the REST API is not sending an image over.

Thanks a lot for any help!

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RaviNarayanan

In the MXD/MSD, can you check if time is enabled on the Map in the time slider window? If yes, then toggle the enable/disabe time on the Map button in the time slider window to disable time on map.

http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//005z0000000z000000.htm

If time is enabled on the Map, time constraints that are set using the time slider control will apply and the entire data may not display by default.

RyanCoodey

Thanks a lot for the idea Ravi... never thought to disable time on the map. Makes sense that would be the problem... but unfortunately it still is having the same problem.

What I did:
- Disabled time on the map (by clicking upper left button on time slider in ArcMap)
- Saved the MXD
- Restarted the map service
- cleared the REST cache
- restarted the map service again (just to make sure)
- launched the REST endpoint front end and tried an "export" on a date that should work
- Also launched my Silverlight map and tested the slider

Thanks for the great idea... maybe something else I am doing wrong?

*EDIT* Tried with MSD too, still same problem 😞
Also, FYI, now that the time is off on the map, I get a wireframe when no time is set because it is trying to show all the rasters... which is expected. So I think we are on the right track and fixed part of the probelm, still not sure why it isn't using the time extent

RaviNarayanan

Is the start/end time fields defined based on a field of type date? Even though ArcMap will allow defining start/end time fields based on non-date fields, REST only supports time defined based on a date field.

RyanCoodey

Is the start/end time fields defined based on a field of type date? Even though ArcMap will allow defining start/end time fields based on non-date fields, REST only supports time defined based on a date field.

Yep, both are date fields. They allow null values, none of them are null though... would this cause a problem? Also, there are just dates in the fields too, no times... the layers time format says <Date/ Time>... don't see this as being an issue though.

I have attached two images, one of the Layers time settings, and one of the attribute table for the raster catalog.

Thanks a lot for the help so far!

TimeAwareIssue2.JPG

TimeAwareIssue1.JPG

RaviNarayanan

The timezone is set to be PST adjusted for daylight savings. In the input to REST time is assumed to be in UTC. I assume that you are taking this into account when specifyign the time filter.

Also can you try query operation with the same time extent values to see if it returns the expected results?

Ravi

RyanCoodey

I have tried setting the timezome to "none" and "no daylight savings" and some other combinations and it didn't seem to matter. PST is only 8 hours off from UTC anyway, and the raster times span 24 days, so I was not worrying about that as an issue yet. The Epoch times I am trying are well in the middle of the images time range. Maybe I am missing something else?

I can not query them by the same time extent either... I can query by name just fine, but not by the time.

RaviNarayanan

Can you post a sample REST request url (exportMap, query) that includes the time query?

RyanCoodey

The server itself is only on our intranet unfortunatly... but here are a few URL examples for you to inspect:

http://bkweb03/ArcGIS/rest/services/Belridge/Test/MapServer/export?bbox=-121.079706883798,33.1304368972571,-117.906365726013,36.7929492216572&size=506,584&format=png24&transparent=true&layers=show:0&imageSR=4326&bboxSR=4326&time=1223987109677

http://bkweb03/ArcGIS/rest/services/Belridge/Test/MapServer/export?bbox=-121.079706883798,33.1304368972571,-117.906365726013,36.7929492216572&size=506,584&format=png24&transparent=true&layers=show:0&imageSR=4326&bboxSR=4326&time=1217318980645

Thanks again for all the time you are spending on this!!!

RaviNarayanan

Is this service running on ArcGIS Server 10.0 prerelease version? Can you try specifying time that is rounded to 1 sec instead of 1 ms.

for example:
1217318980000 instead of 1217318980645

RyanCoodey

Yes, it is running on 10 prerelease (still waiting for our final auth keys).

I tried the below time, and a few others in seconds, and still nothing 😞

RaviNarayanan

Pls try time extent in the query instead of a time instant and see if it works.
eg: 1217318980000,1227318980000

If this continues to be an issue with 10.0 Final, please contact ESRI Support for further assistance on this issue.

Thanks
Ravi

RyanCoodey

It does the same. It works just like with the instant... it will get about 1 out of the 30 rasters in the catalog as you change the time range around.

I am eager to try it in 10 final... Was there a lot of fixes done between pre-release and final?

RaviNarayanan

it will get about 1 out of the 30 rasters in the catalog as you change the time range around.

For my sake of understanding this issue, should there be more than 1 raster returned for the time instant/time extent that was specified? Is it returning the same raster for different time instant/time extents? what is returned when a time extent of null,null is specified?

RyanCoodey

Only ONE raster should be returned for a particular time instant. Each image has a start and end time, and the end time of one image is the beginning of the next. Each image's time range spans 24 days. There are about 30 of these images in the catalog, spanning over a period of about 2.5 years. The attached picture (in the above post) of the attribute table might help you to see the date structure.

So simply put, only one raster should be returned for a particular time instant. 95% of the time I do NOT get even one raster back (when I should)... but 5% of the time I will get one (can be at any time interval, not necessarily the same one when it does show).

Hope that makes sense!

Thanks!!!

RaviNarayanan

Ok, thanks for the details. My initial thought was this behavior could be related to

"NIM053659: Query or ExportMap Image operation in MapService or Feature services does not honor Time Extent with time value containing precision upto milliseconds"

But this was a bug in beta2 and was addressed in pre-release.

RyanCoodey

Ahhh, sure sounds like a similar problem...

And to answer your other question, when I set the time to "null,null" I get back the wireframes of the images... as expected since more than 9 should be showing. Same behavior as specifying no time.

RyanCoodey

Still have this same issue with 10 final... time seems to work fine for a feature layer, but not a raster catalog 😞

RaviNarayanan

Ryan,

Thanks for checking this with 10.0 Final. Can you please submit a request to ESRI Support with a reproducible case so that we can look into this further?

Thanks
Ravi

NAOMIPAUL

We're having the same issue, has anyone come up with a resolution?

v10 sp1

~Naomi

RyanCoodey

We're having the same issue, has anyone come up with a resolution?

v10 sp1

~Naomi

Hi Naomi,

I had gone back and forth with ESRI support for awhile and we did find a solution. Sorry, I had meant to post it here and forgot.

While it is a bug for sure that these are not showing up, all we had to do was create pyramids for the rasters and then they would show up. For some reason server needs those pyramids there which I had not generated for this particular catalog.

Also, another bug that was uncovered... If you serve a catalog with a classified renderer up as a MSD based service it produces a corrupt image each time the image is refreshed (NIM062763).

Hope this helps!!!

NAOMIPAUL

We're having the same issue, has anyone come up with a resolution?

v10 sp1

~Naomi

I solved this by changing the YEAR field on our mosaic dataset from TEXT (as explained in the directions) to a DATE type.

http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009t000000v1000000.htm

Add the Year field to the mosaic dataset
To make this mosaic dataset time aware, you need to create the new attribute field in the mosaic dataset and add the correct dates. You can do this using geoprocessing tools or using the steps below within ArcMap.

Add the new field to the footprint attribute table
Steps:

[INDENT]Add the master mosaic dataset to ArcMap.
[INDENT][/INDENT]Right-click the Footprint layer and click Open Attribute Table.
[INDENT][/INDENT]You should see a row for each mosaic dataset you added.
[INDENT][/INDENT]Click the Table Options button and click Add Field.
[INDENT][/INDENT]Type Year in the Name text box.
[INDENT][/INDENT]Click the Type drop-down arrow and click Text.
[INDENT][/INDENT]Click OK.

WilliamMasters

While it is a bug for sure that these are not showing up, all we had to do was create pyramids for the rasters and then they would show up. For some reason server needs those pyramids there which I had not generated for this particular catalog.

Thanks very much. I was having a similar problem, and when I created the pyramids everything was fixed.

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