Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have a point feature layer in ArcGIS. I want to add a histogram which shows a histogram for selected points. This works perfectly. Two problems:

  • I have a datefield, which spans about three years. I would like the histogram to show totals by month and year. I bypassed the lack of option to do this by calculating year+month/12-1/12. It works, but it's hardly elegant. Also, the X-axis is dynamic, which I don't want. I would like the x-axis to show the whole period, not just months with observations
  • I want the graph to show the total for the values in an attribute for the selected features. With a bar graph this seems to work, but it behaves erraticaly.

I cannot imagine no-one has done something like this before, but searching Google did not help me out.

share|improve this question

I think I've done this. I sum the attribute value based on the date (I can't remember if it's better to have the date as a string variable or a date) and then do a histogram on the summation .dbf data.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.