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I am using QGIS 2.4.0 and I have a vector layer which contains a remoteness indicator which is broken up into 5 categories. I would like to turn this into a layer that has these 5 categories collapsed into 2. On the included map I would like to join the green areas together into one group and the yellow and red areas into another group.

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In the attribute table included I would like to join together the categories in the RA_Name11 field.

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To do this I would:

  1. Add a new field, perhaps called Value and of type integer
  2. Select your two green categories and calculate them to say Value = 1
  3. Select your red and yellow categories and calculate them to say Value = 2
  4. Dissolve on Value.

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