Tuesday, July 24, 2007


Service Pack 1 for AutoCAD 2008 is coming

Shaan Hurley writes about the beta release of Service Pack 1 for AutoCAD 2008 and AutoCAD LT 2008. The fixes included in this Service Pack are coming mostly from the Customer Error Reports (CER) generated in AutoCAD. That's why it is important to really send these reports when you encounter a problem in your AutoCAD.

Service Pack 1 fixes problems in the following areas:

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Tuesday, July 10, 2007


Larger DWG files in AutoCAD 2008

You may have noticed that - the DWG drawings saved from AutoCAD 2008 are a bit larger than the same drawings saved from AutoCAD 2007 (the format is the same).
One of the reasons is probably the longer list of variables (new system variables in A2008) which are saved in the drawing. Another reason which in my opinion influences the file size much more is the larger thumbnail preview image saved in DWG file.
AutoCAD saves a bitmap (BMP raster) of the current view when saving the DWG file. The pixel size of this raster image (and the resulting byte-size) depends on the aspect ratio of the current view but generally, AutoCAD 2007 and older used sizes below 200 pixels while AutoCAD 2008 saves larger bitmaps of up to 256 pixels. This could add up to 64kB to the DWG file size (comparing to a "no-thumbnail" DWG). Thumbnails can be cut off e.g. in Autodesk DWG TrueConvert/TrueView.

Update: Jimmy Bergmark (JTB World) has sent me information that another reason of the size increase is the reconciled layer baseline table. Can be disabled by LAYEREVAL and LAYERNOTIFY.

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