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Make time-slider with color symbology for polygons

Question asked by kateballard on May 16, 2017
Latest reply on May 19, 2017 by xander_bakker

I am working on a thesis where I have data from 2000-2015 that shows lyme disease cases by county for each year. This data has been joined with a county shapefile and I used graded colors based on number of cases/county. I want to use a Time Slider to show the progression each year, and I had to put all the years in one dbf and "transpose" them to get the years in one column (losing the graded colors). Now I have the time slider set up, but I am trying to figure out how to create graded colors again for each county (separated by year) so that the spread can be shown over time using the slider, but I cannot figure out how to do that. I have attached a photo of what the new time slider (aka transposed) attribute table looks like. If you were to scroll down it would continue on showing each county's data. How can I create graded colors from this? (It is already joined with the county shapefile). My second to last picture shows what the graded colors section looked like before I transposed the data and included all 15 years worth of data, instead of just one (in order to use the timeslider). The graded colors section no longer worked when all 15 years were present and transposed. So, instead I had to use the "unique values" option under Categories and use a color ramp, but then what I got is shown in the last picture. I am wondering how to basically get the same results as I did before transposing and when there was only one year's data present, but I want it to show for every year so I can make the time slider. 

Instead of allowing me to make ranges to correlate with different case numbers, now each individual value it listed and I cannot create ranges.

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