Pass field parameter to R script

[Francisco_G_Cal]

I'm currently using field parameters to create dynamics PowerBI graphs. Works GREAT!

And I'm using R Visual Objects to show ggplot2 graphs with PowerBI data. It works GREAT too!! I just need to add the field to the visual objetc as with any other. I.E: I add the fields 'age' and 'hour' from my PowerBI data, and refer them in my ggplot:

ggplot(dataset, aes(x = age, y = hour...

But If I use a Field Parameter, it does not work

Any ideas on how to refer them?

[Anonymous]

Hi @Francisco_G_Cal ,

Did you get any error message? Could you please share the related R script with us for the further investigation? By the way, is there any space or special character in your field parameter name? It need to be enclosed in backticks in R if the column names include spaces or special characters. The following one is the thread which has the similar problem as yours, hope it can help you resolve the problem.

r - Unable to plot ggplot graph on Power BI - Stack Overflow

library(dplyr)

df <- tibble(
  incident_date = dataset$`Incident Date`,
  incident_regular = dataset$`# Incident - Regular`
)

Regressor = lm(formula = incident_regular ~ incident_date, data = df)

ggplot(df) +
  geom_point(aes(x = incident_date, y = incident_regular), color ='red') +
  geom_line(aes(x = incident_date, y = predict(Regressor, new data = df)), color ='blue') +
  ggtitle('Incident Count Prediction') +
  xlab('Incident Date') +
  ylab('Number of Incident')

Best Regards

[Francisco_G_Cal]

I have no problem for drawing my ggplot in R.

Theese are the vars I add to the R Script Object

The last one, 'Numericas', is a FIELD PARAMETER

This is my code (the commented lines are created by PowerBI)

# El código siguiente, que crea un dataframe y quita las filas duplicadas, siempre se ejecuta y actúa como un preámbulo del script: 

# dataset <- data.frame(Accesos, Edad, Hora)
# dataset <- unique(dataset)

# Pegue o escriba aquí el código de script:

library(ggplot2)

color_palette <- colorRampPalette(c("steelblue", "darkblue"))(length(dataset$Accesos))

# Crear el scatterplot con ggplot2
ggplot(dataset, aes(x = Edad, y = Hora, size = Accesos, alpha = Accesos, color = Accesos)) +
  geom_point(stroke = NA) +
  scale_size_continuous(range = c(2, 10)) +
  scale_alpha_continuous(range = c(0.1, 0.8)) +
  scale_color_gradientn(colors = color_palette) +  # Aplicar la paleta de colores
  labs(x = "Edad", y = "Hora", title = colnames(dataset))

And it works perfectly:

But, if instead a field value, I use the Field Parameter

ggplot(dataset, aes(x = Edad, y = Numericas, size = Accesos, alpha = Accesos, color = Accesos)) +

I get this error:

Error Message:
Error del script R.
Error in `geom_point()`:
! Problem while computing aesthetics.
ℹ Error occurred in the 1st layer.
Caused by error:
! objeto 'Numericas' no encontrado

It says 'object 'Numericas' not found

So, is there a way to use 'Numericas'?