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Why does quantities graduated colors show different values?

Xavervon_Beckerath

I am currently working on a heatmap and trying different ways of visualizing my data. I used unique values in combination with labels which worked fine.

However, it may be to confusing for a research paper and and I decided to use quantities instead. Unfortunately, using the same value I get very strange numbers that are not present in my dataset.

I haven't used ArcMap in while but this does not seem right to me. Does anyone know what the problem is?

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Accepted answers

Xavervon_Beckerath

I found a workaround for this problem. I have to correct my previous statement that the numbers seen in the first picture are "not present in my dataset". In fact, they are in a column called "NONE" and causing the issue. By creating a new column "NONE2" and deleting "NONE", the data can be displayed correctly.

This is due to the strange behavior of the "normalization" option in the symbology. The default value is "none" and it will take every field into account with that name (ignoring upper and lower case letters).

In summary, you should avoid to have any fields named "NONE" in your attribute table.

All comments

Xavervon_Beckerath

In summary, you should avoid to have any fields named "NONE" in your attribute table.

Xavervon_Beckerath

The new float column has the same issues. However, I noticed some <Null> values in my data. This may be a result of joins.

I'm not sure if I got your second question right. Copying the data in Excel makes them formated as "general".

DavidPike

I've never seen that before. Can you add a new field as float and use field calculator to calculate the same values and retry on that field. What does it look like if you based one of those values from the total column into excel?

Xavervon_Beckerath

I noticed that too but ignored it as unique values worked fine. The field is "Double".

DavidPike

What's with the 3 comma separated values showing up on the unique values and your table of contents? Your attribute table seems fine as it doesnt have them. What data type is the field?

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