Hi,
first of all let me thank you all for your contributions on this forum, helped me out a lot already.
Now I have a problem I have not found a solution for (otherwise I would not be posting, right 😉 )
I have a data set of chemical analyses, with the following fields:
- location (of the operation)
- element (containing the names of the chemical elements, such as 'Cu', 'Pb', ...)
- value (measured value)
- date (of the measurement)
I have a stacked bar chart with location as a first dimension, and element as a second, and avg(value) as measure, with a filter pane for the date.
Now one of my colleagues asks whether I can also plot the chemical analysis, normalised with respect to one of the elements, say 'Cu', so that the value for Cu would be 1 at each location, and the other elements would show a relative value. I tried dividing by avg({$ <element = {'Cu'}>} value), which does not work as every line in the table which is not Cu does not contain a value for Cu...
Any ideas?
Thanks a lot!
