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Dynamic Rest Legend in ArcGIS Server 10 and Flex API 1.3

JasonHancheruk

I just upgraded ArcGIS Server to version 10 from 9.3.1. When I open the Flex page through the browser, instead of the dynamic legend loading, the wait for legend creation just keeps spinning.

Is there a way to fix this problem?

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RobertScheitlin__GISP

Jason,

The whole ASP.net webservice was built using 9.3 server so a new web service would have to created for 10. I'll have to see what I can do when I get some time.

RobertScheitlin__GISP

Jason,

I forgot I had already done this work. In the zip is also an update to the liveMapsWidget.mxml code that you may want, it is for when you turn off sub layers of a map service in the TOC those layers are turned off in the legend also.

RestLegend4.zip

JasonHancheruk

It blows my mind at how well you know this stuff.

Thanks.

JasonHancheruk

Hi Robert

I have been trying to get your new Rest Legend to work and I keep running into the same problem. Every time the Legend tries to load I get the same error. Please see the attached jpeg.

Thanks,

LegendError.jpg

RobertScheitlin__GISP

Jason,

Open a web browser and test if the web service is doing what it is suppose to. So on the ArcGIS Server machine that you ran the setup on type "http://localhost/restLegend/restLegend.asmx" and then click on generateLegends and type in some default values like:

soapUrl: http://services.arcgisonline.com/ArcGIS/services/Demographics/ESRI_Diversity_US_2D/MapServer
dpi: 96
pWidth: 20
pHeight: 20
serviceName: Test

That should return a XML result.

shafitrumboo

@Robert
I am not able to extract the file. it shows file is damaged

JasonHancheruk

It does return the XML with all of the information.

Hopefully, the attached JPEG works this time.

LegendError.jpg

RobertScheitlin__GISP

Jason,

Can you attach your LiveMapsWidget.mxml?

JasonHancheruk

Attached is my LiveMapsWidget.

I have changed my transparency slider, would this cause a problem for the legend generation?

Thanks,

LiveMapsWidget.mxml.doc.zip

JasonHancheruk

Update.

It appears the error shown in the previous post only happens when initially opening the Flex page. To test, I opened the application page, then zoomed in (sometimes once, other times twice) and the map legend appeared as normal. Robert, do you have any ideas on the cause?

Thanks.

RobertScheitlin__GISP

Jason,

   Well there is no error in your LiveMapsWidget.mxml as I took it and only changed the url of the wsdl and it worked just fine for me when I used your code in my viewer.

   When you tested the asp.net web service on your server as I mentioned in my previous email did you happen to copy one of the image urls and test to see if it displayed and image when you put it in a browser?

   Also have you put http://AFR112PROD4/restLegend/restLegend.asmx?wsdl in a browser and seen it bring up the wsdl file for your to see?

RobertScheitlin__GISP

Shaf,

The file is not damaged this is a known issue with this forum when you try to use Internet Explorer to download a zip file. Try and use Firefox or Google Chrome instead. Also be warned that this is not something that is easy to implement even for a non-beginner in Flex.

JasonHancheruk

Hi Robert. Yes I did test to see if the image came up, and I had no problems connecting to any of them in the xml. Since they always work, but not right away, could it be a timing issue where the legend request is timing out before the app gets a chance to populate the legend?

Thanks,

JasonHancheruk

Hi Robert. Is there anyway to pause the creation of the Legend? When I look at the error through Fiddler (below), I am thinking the legend is trying to start before the server is ready.

Yes/No, any help would be great.

<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body><soap:Fault><faultcode>soap:Server</faultcode><faultstring>Server was unable to process request. ---&gt; The request failed with HTTP status 404: Service Not Found or Not Started.</faultstring><detail /></soap:Fault></soap:Body></soap:Envelope>

Thanks,

RobertScheitlin__GISP

Jason,

You have your LiveMapsWidgets coming up with the legend from the start right? Can you instead have it open to the TOC and then let the user switch to the legend?

JasonHancheruk

Ignore the the last post. It was the aerial imagery in a map service.

Sorry, forgot about that issue.

http://forums.esri.com/Thread.asp?c=158&f=2421&t=299116

Thanks,

JasonHancheruk

Hi Robert.

I have been playing around with the dynamic legend, and I am still getting the error. The error only happens the first time I open the legend, and hitting the browser refresh button fixes it.

If I remove the service that contains the rasters (from the config file), the problem does not appear at all. This does include adding the raster service to code as mentioned in the previous post.

I am wondering if you have any ideas on why this may be happening?

Thanks,

RobertScheitlin__GISP

Jason,

Rasters can not be part of a map service that you are generating a legend for. That is just a limitation of the code. I have advised others in the past to just separate out raster layers to their own map service and then exclude them from the legend code.

JasonHancheruk

I have three different services opening, with one containing rasters. I don't remember the forum where you showed how to remove the specific service layer from the legend.

Thanks,

RobertScheitlin__GISP

Jason,

Look for this line in your LiveMapsWidget.mxml

if (ArcGISDynamicMapServiceLayer(liveLayers).id != "Aerial Photography")

and change "Aerial Photography" to the id of your raster map service.

JasonHancheruk

Okay, what if I have 3 different IDs for various raster data?

RobertScheitlin__GISP

Jason,

Didn't you say you have one MAP SERVICE that has your rasters in it?

JasonHancheruk

Sorry, maybe I am getting my terminology wrong. I have 3 MXDs published as a mapservice, and have added them into the livemaps section in the cofig.xml. Two of the mapservice's have vector data, but the third mapservice has 3 different layers which are all rasters.

RobertScheitlin__GISP

Jason,

So the label of the map service in the config.xml that has the rasters that is what you use to replace in that line of code then.

JasonHancheruk

Thanks Robert.

The label name did the trick.

chena

Hi, Robert
I like the dynamic legend widget a lot and trying to load it into my project. I have ArcGIS Server 9.3.1and SFV1.3, After modified the source code and tried to run my flex project, I got error "There are no visible layers, or map legend generation failed!". But when I check the server, the png files were written to c:\\gisserver\arcgisoutput\xyz.png, and I can open them with IE.

I don't have any raster image on server, and I notied I have map service just for labeling, so I excluded that by change (ArcGISDynamicMapServiceLayer(liveLayers).id != "labeling").

Do you have any idea about what else I missed? I attached the livemapswidget in a zip file, when you get any chance , would you please take a look for me? Thanks for your help!

Amy

Jason,

Open a web browser and test if the web service is doing what it is suppose to. So on the ArcGIS Server machine that you ran the setup on type "http://localhost/restLegend/restLegend.asmx" and then click on generateLegends and type in some default values like:

soapUrl: http://services.arcgisonline.com/ArcGIS/services/Demographics/ESRI_Diversity_US_2D/MapServer
dpi: 96
pWidth: 20
pHeight: 20
serviceName: Test

That should return a XML result.

LiveMapsWidget.zip

AshleyOwens

Robert - For widget "Dynamic Legend Widget For Flex Viewer 2.3.x", am I correct in assuming it will not work for a Flex 2.1, ArcGIS Server 10.0 configuration? If so, does a version compatible with Flex 2.1 exist?
Thank you,
Ashley

RobertScheitlin__GISP

Ashley,

I am unsure about backwards compatibility but I would suggest trying. As Flex Viewer 2.4 is coming out this week it's probably long over due to update though...

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