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I am just getting started with the GEE Python API. I want to extract NDVI values from single pixels of a MODIS product. When I run this:

I try to create an app in Shiny and all selectInput were dynamic reactive objects but at the moment they make some plot (output$myplot) with the combination of the variables select and if(){} condition using observe({}), my plot doesn't work (PEST == unique(stands_ds$PEST) : length of larger object is not multiple of length of smaller object). The problem is with the final selection object selectedvariable4 and try to used selectedvariable4, selectedvariable4(),selectedvariable4()$ID_UNIQUE and unique(selectedvariable4()$ID_UNIQUE) without success. In my example:

I try to create an app in Shiny and all selectInput were dynamic reactive objects but at the moment they make some plot (output$myplot) with the combination of the variables select, my plot doesn't work (Error in charToDate: character string is not in a standard unambiguous format). The problem is with the final selection object selectedvariable4 and try to used selectedvariable4, selectedvariable4(),selectedvariable4()$ID_UNIQUE and unique(selectedvariable4()$ID_UNIQUE) without success. In my example:

In my shiny example below I have 3 variables (Project, Stand and ID_Unique). I would like that when I select Project, the variables Stand and ID_Unique would only be those contained in the selection made in Project in the input. Here is my detaild example:

I have an if statement condition for my plots and I need to use observe function. All the app works OK, but when I try to use the shinymanager for credentials creation, my app doesn't work anymore and the error is always: Error in if: argument has length zero

I'd like to use my currentvariable5() reactive object to create some kind of plot if == "A" ( if(currentvariable5()=="A"){}) and another if == "B" (else{}). But I try many tricks in several posts and the output is always:

I have a shapefile (mult_point_example.shp) in a multipoint geometry:

I have a problem with plot contour lines using st_as_sf() in shinyapps.io. I checked all the packages' dependencies and nothing. I know that's in st_as_sf() because in my all data set, some contour plot works and don't have any geometry problem with my stands_extent file.

My plot works very well in local Shiny RStudio:

But after publish on shinyapps.io:

My example below and just only with Unique ID CERROCOROADO_003A the plot work:

I'd like to download inside Shiny a georeferenced PDF file (geoPDF) and for this a need some steps like convert the plot in ggplot format to tiff, populate the spatial coordinates, create a geo tiff, and finally my geoPDF. But several steps in downloadHandler() function in tempdir() directory results always in the error: