Latest Contributions by RickCheney

I am using ArcMap Desktop.  I have a shape file with contour lines for about eight lakes in an area of about 15 square miles. The picture below is to give an idea of the distance between lakes and the picture at the bottom is a more zoomed in view of some of the lakes.  I already have DEM data for the white area in the pictures.  I would like to use the contours lines in the lakes to make DEM data which I could then adjust to make the shallower water light blue and the deeper lake depths a darker blue. I tried using the TopoToRaster tool but it thinks the area between the lakes is part of the lakes and make dem data for the entire area. Can the TopoToRaster tool do only the lakes with the contour lines?  How?  Or, is there there a better tool for this?   ... View more

The three lines of JavaScript below add a map overlay on top of Google Maps.  It was working fine and suddenly stopped working.  Does anybody have any ideas on how to get this to work?   The reason I am combining Google Maps and ArcGIS is because I need the ArcGIS map but I also need a rectangle which the user can move around and re-size to select an area of the map.  If there is a way to create this type of rectangle with ArcGIS then I don't need to use Google Maps. var url = 'http://www.giscoecache.lrc.gov.on.ca/ArcGIS/rest/services/LIO_Cartographic/LIO_Topographic/MapServer'; var agsType = new gmaps.ags.MapType(url,{name:'ArcGIS', opacity:9.5}); map.overlayMapTypes.insertAt(0, agsType); The ArcGIS map is at this link:  LIO_Cartographic/LIO_Topographic (MapServer) My demo map is at this link (I had to comment out the three lines above to get the rectangle to show:   demo_v6 ... View more

I have a base layer that represents an area that has two layers above it, one layer is lakes, the other layer is wooded area. In the image below the layer with the lakes is blue, the layer representing wooded area is green, the pale green is the base which covers the entire area. The pale green represents lowlands, low elevation. The two images below show the wooded layer and the lakes layer without the pale green base layer. If I set the three layers as shown above the pale green lowlands show through, but, when I add the elevation layer (DEM) the lowlands do not show through.  I can add transparency to the DEM but that washes out the colors in the lakes and wooded area. I would like to use the wooded and lakes layers to create some sort of masked area which represents only the lowlands.  Then I will have some options to make the lowlands show through the DEM layer, I might be able to move the lowland layer above the DEM layer or make the color brighter, etc.  Any ideas on how to create a layer representing only the pale green areas in the image above?  I have used the Feature Outline Masking Tools to mask the contour labels but I don't know if that will work with polygons. ... View more