I'm very new to QGIS.

I have a shapefile of NYC census tracts and 2 csv info files with tract info joined with it. I'm trying to style the individual tracts to be filled with a different color based on the income of that tract (that info is in one of the columns of the csv file). In order to do that, I went to Layer Properties > Style and chose Categorized from the top drop-down. I then selected the income column and hit classify to display the color-coded contents. Once everything looked good, I pressed okay, and suddenly the map turned black, momentarily flashing random tracts until stopping.

It looks like this: enter image description here

Any idea what I'm doing wrong?

closed as off-topic by underdark Apr 27 '15 at 16:31

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions describing a problem that can't be reproduced and seemingly went away on its own (or went away when a typo was fixed) are off-topic as they are unlikely to help future readers." – underdark
If this question can be reworded to fit the rules in the help center, please edit the question.

  • Guessing since you don't show the layer properties: the border width seems to be extremely wide. Could it be that the borders are covering up everything? – underdark Apr 24 '15 at 20:19
  • @underdark, how would I check that? – wonderv Apr 24 '15 at 20:54
  • ... in the layer properties ... – underdark Apr 24 '15 at 20:55
  • 1
    Turns out I had one area that covered the entire perimeter of the city. Once I removed it, everything worked. – wonderv Apr 26 '15 at 22:13