exportMapImage - Newbie trying to integrate it

Question

I am trying to get the following function to work, however, it gives an "unsupoorted method" error at mapImage=map.exportMapImage(mExport_Settings); - What have I missed? (using 1.6 and have set dojo.require("esri.layers.agsdynamic"); as per API).  I know there is an option for a callback in the exportMapImage() but for now I am just testing things.function ExportMap() {
            var mExport_Settings = new esri.layers.ImageParameters();

//Could be png8/24, jpg,bmp,gif
            mExport_Settings.format = "png24";
            mExport_Settings.bbox = map.extent;
            mExport_Settings.height = "800";
            mExport_Settings.width = "800";
            mExport_Settings.layerIds = [1, 4];
            mExport_Settings.layerOption = esri.layers.ImageParameters.LAYER_OPTION_SHOW;
            mExport_Settings.transparent = true;

var mapImage = esri.layers.MapImage;

mapImage = map.exportMapImage(mExport_Settings);
            alert(mapImage.href);
            
        }

HeathClark · Answer

The exportMapImage method will create an image (png/jpeg) in your server/arcgisoutput folder that you will have to obtain a reference to then display/copy/move/etc.  based on your application.

var mExport_Settings = new esri.layers.ImageParameters();

//Set image formate property could be png | png8 | png24 | jpg | pdf | bmp | gif | svg
    //ALWASY USE PNG FORMAT SO WORLD FILE AND PROJECTION FILE WORK
    mExport_Settings.format = "png24";
    mExport_Settings.bbox = map.extent;
    mExport_Settings.height = 1600;
    mExport_Settings.width = 1600;
    mExport_Settings.dpi = 300;
    mExport_Settings.layerIds = [10000];
    mExport_Settings.layerOption = esri.layers.ImageParameters.LAYER_OPTION_EXCLUDE;
    mExport_Settings.transparent = true;

facility_service.exportMapImage(mExport_Settings, function(mapImage) {

var xmin = map.extent.xmin;
        var ymin = map.extent.ymin;
        var xmax = map.extent.xmax;
        var ymax = map.extent.ymax;

var extent_string = xmin + "|" + ymin + "|" + xmax + "|" + ymax;

var jGraphics = "";

if (redlineMarkup_GraphicsLayer != null) {
            if (redlineMarkup_GraphicsLayer.graphics.length > 0) {
                for (var i = 0, il = redlineMarkup_GraphicsLayer.graphics.length; i < il; i++) {
                    var gJ = redlineMarkup_GraphicsLayer.graphics.toJson();
                    jGraphics += dojo.toJson(gJ) + "#";
                }
            }
        }

intialize_redline_export_callback.PerformCallback(lString);
    });

intialize_redline_export_callback.PerformCallback(lString); is a callback function in my .net "codebehind" page that takes the mapImage.href value and copies the .png file from the ArcGIS Server to another location and logs that location in a database for later viewing.

hope that helps a bit.

Mohd_HairiHamzah · Answer

First thing, exportMapImage is a layer method, not a map method so you need to call it on a dynamic map service layer. Second, provide a callback function to handle the map image that is returned. Something like this: Create Map

BillAdkins · Answer

Same question as above, is it possible to push multiple dynamic layers onto an image?  Question that has been asked in many ways, but I am trying to create a decent print page and do not want to use the methods available in the code gallery.