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ArcMap 9.3 Spatial Analyst Math function Minus. I have two ASCII rasters with identical extent and cell size representing mean annual temperatures. I want to difference the two rasters to produce an output raster with the same extent and cell size. However when I use the tool I get a raster with only 1 row and one column. I also get an attribute table with three rows and fields of VALUE and COUNT. What am I doing wrong?
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01-08-2020
02:00 PM
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Thanks so much for replying Sean, that fixed the problem.
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04-10-2013
09:03 PM
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Hello Sean: Thanks for the suggestion, but unfortunately it did not solve the problem. Here is the code that sets up the edit sketch. It's the same for both Tool A and Tool B.
m_editSketch = m_editor as IEditSketch2;
m_editSketch.GeometryType = esriGeometryType.esriGeometryPolygon;
m_editEvents = (IEditEvents_Event)m_editor;
m_editEvents.OnSketchFinished += new IEditEvents_OnSketchFinishedEventHandler(m_editEvents_OnSketchFinished);
m_editor.CurrentTask = null;
A little more information that might be helpful: if I put a breakpoint on the OnSketchFinished event for tool B, on entry to the event handler the editor and the edit sketch are null items, so the edit sketch geometry is null as well - as if the editor and edit sketch have been consumed by some event handler left over from Tool A.
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04-10-2013
01:03 PM
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I have a set of tools (inherited from BaseTool) developed in VS2008 C# for ArcMap 9.3. One of the tools (call it Tool A) uses the editsketch to create a polygon which is then added as a new feature to a feature class (call it feature class A). The edit operation is stopped at that point. Then in another tool (call it Tool B) I again use the edit sketch to draw a polygon which is used to select point features and perform some operations on them (I do this because it is easy to set up the edit sketch geometry and capture the FinishSketch event to get the edit sketch geometry). However, the first time I use the edit sketch in Tool B after creating a feature with Tool A, the polygon that I create to use as a selector is added as a new feature to Feature Class A. It's as if the double click event that finishes the sketch in Tool A is still hooked to the event, even though the editor has been stopped and a (supposedly) new edit sketch has been started. Does anyone have any insight into why this is happening, and maybe a solution?
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04-09-2013
05:51 PM
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Thanks to all for the help - I have used a singleton class and it looks like it will do the job -still have a long way to go. I understand that I could also make my set of tools etc and extension, but I'm trying to avoid that additional level of complexity.
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03-26-2013
11:36 AM
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OK, here is an example of what I mean - one of the tools is going to generate, through user input on the map, an angle. I want the value of the angle to be available to other commands and tools in the project. How do I do that?
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03-26-2013
08:46 AM
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All commands, tools and the toolbar are in the same project, which is an add-in (to be implemented via Tools/Customization). As to design patterns, right now I have no choices - as I said, I am stumped, but I think I am missing something really obvious...
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03-26-2013
07:41 AM
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I am customizing ArcMap using VS2008 with the Developer Kit for .NET. I have created a C# project with some commands and tools and an associated toolbar. I want to share some data among these items within the project (so that the data is available to each tool or command when it is executing), but I can't figure out how to do it. I'm pretty sure this is a simple question, but it's got me stumped for now. Can anyone give me some suggestions?
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03-26-2013
07:12 AM
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