Latest Contributions by DaveOrlando

After viewing my newly cached images, on top of another solid layer, I noticed speckles showing on the imagery. These speckles turned out to be the bottom layer showing through the PNG's 'background'. Apparently a PNG's header info contains a single color that represents the transparent background. In the process of caching, this background value is inherited from the background value of the source ArcMap document's dataframe. If not altered, the default is 253, 253, 253. After caching, every pixel with the rgb of 253, 253, 253 will be treated as transparent and therefore show any colors that are below it (in whatever application you are using your final cache in) If you are displaying your cache directly over white, no big deal, if not, expect to see odd 'speckles'. Since I am displaying my cache over another cache and there is some overlap, before caching I had to set my dataframe's background to something obscure and unnatural like rgb, 200, 100, 200 and hope that there weren't many pixels with this value. I should also mention that there are settings in ArcMap to change the transparent color of your cache to 'none', but this may not help if you are not using ArcMap. I'm writing this as a partial solution, only because there is not any info out there about this. Discussion and input is more than welcome. Thanks ... View more

Hello, I need some creative thinking here. Is there a way to use QueryTask to query a GraphicLayer or List<Graphics>. This graphic layer will be a result of a GeometryService.LabelPointsAsync so there isn't a URL to pass into the constructor. I'm trying to mimic ArcMap's Select By Location using the centroid option. None of the other API SpatialRelationships will do. Thanks, Dave ... View more

Is there any documents or white papers on the changes made to the REST services. I've read from other posts that it communicates entirely through JSON now. I'm no where near an expert on communication protocol but something has changed along the line somewhere. My Silverlight application (API 3.1) is having intermittent trouble with the QueryTask. some posts are suggesting that it can't communicate properly with JSON Extremely tough to read about stuff like this ahead of time so you don't know you're in trouble until it's too late. Thanks, Dave ... View more

hello, how can I check the user's geometry before it gets passes to the editor? I'm using editor in rectangle mode (I use rectangle because it accepts points which is great) but if the user draws a perfectly straight line nothing gets selected. I need to intercept it somewhere before the editor actually gets called, to check the geometry. to be clear, the code returns fine with an empty selection, no errors at all, until I check my Server Logs. In Server Manager I get: "Geodatabase error: The number of points is less than required for feature" to me this means the SL code lets the line pass, but the .MapServer doesn't know how to handle it. Thanks, ... View more