Clark Labs Tech Support Team

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3. Import ArcGIS training data for classification

Hello, After importing your shapefiles into IDRISI you should have a number of files.  The .vct  (IDRISI vector file) file will contain a sequential numbering of your training sites, and then a .v...

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• Clark Labs Tech Support Team
• Created July 09, 2012 16:02
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3. how can i see the raw data of a land cover from a .rst/.tif/.img file?

There are two ways you can view the raw data in IDRISI.  First, you can right click on the image name in the IDRISI Explorer tab and select ‘Show Structure’.  This will bring up the Image Matrix wh...

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• Clark Labs Tech Support Team
• Created July 09, 2012 16:45
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3. How to cut the data from a bigger area to a smaller area? For example i have a map of Global land cover data.How can i get the data of North Carolina, USA from the Glboal mapping data?

There are several ways you can select only a smaller portion of your already imported image data to use for analysis.  Some specific modules are as follows: WINDOW extracts a sub-image from an ori...

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• Clark Labs Tech Support Team
• Created July 09, 2012 15:50
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3. Image classification

Dear Solomon, The level of tolerance that you should specify in the Segmentation module depends on your data and your expected, or desired, result.  The minimum tolerance that you can enter is 0, ...

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• Clark Labs Tech Support Team
• Created July 09, 2012 15:41
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3. Image classification

Hi Solomon, The background values should not matter because after running the SEGTRAIN module, you are only identifying the segments that you need for the analysis.  If you are still concerned, w...

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• Clark Labs Tech Support Team
• Created July 16, 2012 20:02
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3. I am working with the Decision wizard in Idrisi Andes.When I get to the final step, I receive the error messege: invalid floating piont operation.

Hi Shirley, At times, when using Decision Wizard it can be confusing to enter all of your parameters for each step.  In these situations, we recommend starting from the beginning of your analysis ...

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• Clark Labs Tech Support Team
• Created July 16, 2012 20:13
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3. Landsat 7 scan line correction tool?

Hi Kaera, To answer your questions: 1- IDRISI does not include a tool that can rectify such large gaps in a data set such as the data available from Landsat 7.  We generally do not recommend work...

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• Clark Labs Tech Support Team
• Created August 22, 2012 19:12
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3. Memory?

Hi Meredith, We recommend an absolute minimum of 2 GB of memory, and advise for 4 GB or higher.  Below is a link to the System Requirements for IDRISI Selva. http://www.clarklabs.org/products/sys...

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• Clark Labs Tech Support Team
• Created October 09, 2012 19:21
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3. Python in IDRISI

To use Python scripting with IDRISI, you will need to first import the COM client and call the IDRISI COM server.  You will need to include the following two lines at the top of your Python script:...

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• Clark Labs Tech Support Team
• Created May 17, 2012 16:38
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3. How to convert data between ArcGIS format and IDRISI format?

There is a number of ways to convert ArcGIS grid files and shapefiles into IDRISI raster and vector file formats.  Below I have outlined some of the most common ways to import ArcGIS files into IDR...

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• Clark Labs Tech Support Team
• Created April 20, 2012 14:52
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