[Tilecache] tilecache layer in arcgis server javascript api

[Scott Pezanowski]

Chris,
I think I discovered my last issue. The ArcGIS api seems to be putting the rows in reverse order. Either top-down or bottom up, depending on the reverse of TMS. For my initial zoom level, I subtracted the row number from the total number of rows (3 rows), and my map looks good. Is there a way to find the number of rows for a given scale level?
Thanks,Scott


********************************************* Scott Pezanowski 


email: scottpez at hotmail.com  
*********************************************



> Date: Mon, 14 Dec 2009 10:50:05 -0500
> To: scottpez at hotmail.com
> CC: tilecache at openlayers.org
> Subject: Re: [Tilecache] tilecache layer in arcgis server javascript api
> From: crschmidt at metacarta.com
> 
> On Mon, Dec 14, 2009 at 08:15:11AM -0500, Scott Pezanowski wrote:
> > 
> > Hi,
> > I am wondering if anyone has been able to get a custom tile cached layer from TileCache to display correctly in the ArcGIS server javascript api? Or can someone direct me on the proper configuration. This page describes creating a custom tiled layer in the api:
> > http://resources.esri.com/help/9.3/arcgisserver/apis/javascript/arcgis/help/jssamples_start.htm#jssamples/layers_custom_tiled.html
> > It seems I need to add the scale and resolutions of my zoom levels. However, I am having difficulty doing this.
> > 
> > This is what my tileinfo looks like:
> > 
> > this.tileInfo = new esri.layers.TileInfo({            "rows" : 512,            "cols" : 512,            "dpi" : 72,            "format" : "JPEG",            "compressionQuality" : 0,            "origin" : {              "x" : -180,              "y" : 90            },            "spatialReference" : {              "wkid" : 4326            },		"lods" : [              {"level" : 0, "resolution" : 0.00014444444444444444444444444444444, "scale": 45497.4416},		  {"level" : 1, "resolution" : 0.000031747816880420907984514989617448, "scale": 10000},              {"level" : 2, "resolution" : 0.000015873908440210453992257494808724, "scale": 5000},              {"level" : 3, "resolution" : 0.00000011023547527923926383512149172725, "scale": 2500}            ]          });
> > 
> > I used this link to compute my resolutions by hand:
> > http://code.google.com/p/xenia/wiki/TileCache
> > I actually do seem to be getting back tiles; However, all of them are outside the range of my data and I simply get white tiles. My data bounding box is -77.92,-40.75,-77.79,40.85.
> > My tile urls look something like this    /0/1216/1380.jpeg   when I think they should look more like this     /0/0/1.jpeg
> 
> Not entirely sure why you think the tile URLs should look like 0/0/1.jpg when
> you've given your origin as -180, -90. Also, you didn't include your tilecache
> config. Can you include your tilecache config, and explain why you
> think the origin should be what it is?
> 
> -- Chris
> 
> > Thanks in advance for any help on what I may be doing wrong.
> > Scott
> > 
> > 
> > ********************************************* Scott Pezanowski 
> > 
> > 
> > email: scottpez at hotmail.com  
> > *********************************************
> > 
> >  		 	   		  
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> 
> 
> -- 
> Christopher Schmidt
> MetaCarta
 		 	   		  
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