Summing data from a column in attribute table

Guillaume 11/08/2018. 3 answers, 149 views

I'm working with population data, and I have an issue when it comes to knowing the sum of a population inside the attribute table. In my attribute table, I'd like to add all the numbers in the red box.I'd like to add all the numbers together from the column UN_2015_E. Is there a way to do so?

3 Answers

Christophe 11/08/2018.

An other possibility with the merge tool :

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Taras 11/10/2018.

There are several methods that I may refer you to:

1. First one is called "Show statistical summary". Symbolized as a Sigma symbol(Sigma), placed in the main QGIS working window.


In the appearing window, you just need to choose the layer which you are interested in (population data) and choose the field that you want to explore, seems like "UN_2015_E". The total number will be calculated just in the row called 'Sum'.

The same result can be achieved with View > Statistical summary

Or as it was already mentioned by @Erik you can proceed with View > Panels > Statistics Panel

2. There is a plugin called Group Stats, see the image below.


However, I apply this plugin when I require some calculations to be exported, but I do not want to launch Excel.

3. If you open the Attribute table and put the layer in edited mode, then you will be able to type sum("UN_2015_E") in the Expression dialogue and get the result as an Output preview.

In case if you are dealing not with integer values your expression can be altered as round(sum("UN_2015_E"),0)

4. With a hint from @J.R, there is also a possibility with a Virtual layer through Layer > Add Layer > Add/Edit Virtual Layer.

In the Query panel, you just need to type a short statement, see the image below.

FROM Your_shapefile_name


In case of not integer values, you can adjust your query as following

FROM Your_shapefile_name

Erik 11/08/2018.

Add the statistics panel (view - panels - statistics panel) to your window layout and then let it show you the statistics of your column. - Download Hi-Res Songs

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