07-25-2018 07:42 AM - edited 07-25-2018 07:43 AM
Can the R custom visual not show text results?
I just used the summary(dataset) function. And in R this properly shows the min/max/median/etc. but when I attempt the same script in R within Power BI I get the following error message:
"No image was created. The R code didn't result in a creation of any visuals. Make sure your R script results in a plot to the R default device."
I've correctly run R scripts via Power BI before, so I don't think my setup is incorrect. It seems odd though that Power BI can't display any/all output from an R script. This is frustrating, especially when it comes to troubleshooting.
Am I not looking at this correctly? Or is there something I'm missing?
Any thoughts/suggestions would help.
07-25-2018 08:09 AM
Right. But how often is something displayed that is not a visual? The Card "visual" is a good example of this where it's a single number that has to be shown.
I have linear regression model in R that is providing me with a single forecast that I would like to display in Power BI. But I can't seem to find a way to do it since Power BI can only display R visuals rather than the results of the R script itself.
07-26-2018 08:23 AM
Just submitted idea here: https://ideas.powerbi.com/forums/265200-power-bi-ideas/suggestions/34937713-change-the-r-visual-to-s...
07-26-2018 08:37 AM
That's a good idea. I share your pain when I sometimes want to show a text value directly from R. I think you can get around this right now if you bake your R script into a custom visual. I haven't done it before but people make it sound pretty doable
07-26-2018 08:42 AM
Thanks for the head's up. I'll keep looking around, but I haven't seen any examples. I've tried using simple summary(dataframe) or str(dataframe) functions and came up with errors in Power BI, but perhaps I'm misunderstanding you.
07-26-2018 09:49 AM
I don't think the plain R visual will display anything other than a plot as of now. In order to get a visual to display text from R such as summary(dataframe), I think you would have to create your own visual. Check this out real quick and you may have some luck
08-17-2018 05:57 AM
As you say R script visual only show image but a possible way to display the result of summary function is to use the grid.table function of the gridExtra package . I make an example with the iris dataset. See image below.
Surely this does not cover all your needs but I hope it will help you.