openmolecules.org Forum: Cheminformatics » Removing "NaN points" from graphs or formula to avoid "NaN" results

Home » DataWarrior » Cheminformatics » Removing "NaN points" from graphs or formula to avoid "NaN" results

Show: Today's Messages :: Polls :: Message Navigator

Removing "NaN points" from graphs or formula to avoid "NaN" results [message #1734]

Mon, 12 September 2022 13:48

Charlene
Messages: 2
Registered: September 2022

Junior Member

Dear team,
First of all, thanks a lot for this useful forum, I already found answers to my questions in the previous topics!
However I was not able to find an answer to this issue that I encountered:
- I added calculated values with some formula from different columns. However, in these columns, some rows do not have values and are empty, therefore the calculation gave "NaN"
- The problem is that when I draw a 2D graph, the "NaN" values are also reported on the graph as "0" all on the bottom which is not useful.

My questions are:
- is there a function like there is on excel which allows to get an empty box if the result of the calculation is 0?
- and/or is it possible to remove all the "NaN" points from the graphs?

Many thanks in advance for your return,
Kind regards,
Charlène

Report message to a moderator

Re: Removing "NaN points" from graphs or formula to avoid "NaN" results [message #1737 is a reply to message #1734]

Tue, 13 September 2022 21:42

thomas
Messages: 715
Registered: June 2014

Senior Member

Dear Charlène,

the answer to your second question is easy: the default for graphical views is to show empty values ('NaN' means 'Not a Number' and treated as an empty value). You can change the setting by pressing the 'wrench' button of the view, the switch to the 'Row Hiding' panel and uncheck 'Show empty values'

I don't quite understand the first question. '0' is a number and a valid numerical result. If a calculation cannot be done. because an input value is not numerical or because of another error, you get NaN or Infinity. If you intentd to convert a '0' result into an empty cell, you could use the if( Wink

function.

Report message to a moderator

Re: Removing "NaN points" from graphs or formula to avoid "NaN" results [message #1742 is a reply to message #1737]

Wed, 14 September 2022 08:29

Charlene
Messages: 2
Registered: September 2022

Junior Member

Dear Thomas,
Thanks a lot! I did not know this possibility and I thought that NaN was considered as text!
It solved my problem, thank you very much Smile

Have a great day!
Charlène

Report message to a moderator

Previous Topic:	Metrics to use for UMAP analysis with SkelSpheres descriptor
Next Topic:	Molecular Descriptors Tools (Free for non-commercial use)

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Thu Nov 21 14:23:16 CET 2024

Total time taken to generate the page: 0.02990 seconds