Is there a limitation number of facilities for "Find Closest Facilities" API Sample?

ZhengxiWang

I am trying to customize "Find Closest Facilities" (under "Network Analyst") from JavaScript API Samples at http://help.arcgis.com/en/webapi/javascript/arcgis/demos/routetask/routetask_closest_facility.html and I found that it seemed there was a limitation number of facilities. When I used 10 or below facilities, my customized Web application worked well, but if I used over 10 facilities, my customized Web application did not work.

It only showed the point user clicked, but no route was shown. Here is my customized Web application of 6 facilities: http://egis.artsci.uc.edu/wang_fp1201.htm and here is my customized Web application of 38 facilities: http://egis.artsci.uc.edu/wang_fp1202.htm .

Could you please help figure out what is the problem of my Web application? I would appreciate your help a lot!

Thanks for any suggestions!!!

derekswingley1

There isn't a hard limit on the number of facilities you can use. The problem you're probably having is that using more facilities generates a longer URL. When the API tries to load a URL over 2048 characters, it automatically switches to doing a POST instead of a GET. Doing a POST with a long URL requires a proxy page due to limitations imposed by some browsers. It's pretty straightforward to set up a proxy page. We have instructions on how to do this in the proxy page documentation.