Error with `sits_get_data`

[paulacopelli]

Hello!
I encountered an issue where, despite having a valid data cube for sits and a set of points from which I want to extract information, I received an error.

Code:

samples_itata <- sits_get_data(
  cube = cube_itata_mosaic,                # data cube to extract information from
  samples = Puntos_totales,                # sample points
  bands = sits_bands(cube_itata_mosaic),   # bands to extract the time series from
  label_attr = "label",                    # attribute column for class label of each sample
  pol_id = "Nivel3",                       # polygon ID
  crs = "EPSG:32718",                      # coordinate reference system
  multicores = 1,                          # number of cores to process the time series
  progress = TRUE                          # show progress bar
)

I don't have the exact error message, but it was related to "invalid input," without specifying whether it referred to the data cube or the sample points.

[paulacopelli]

The exact message error is:

Error: sits_get_data: unable to retrieve data - check input parameters

> sessionInfo()
R version 4.3.1 (2023-06-16 ucrt)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 11 x64 (build 22621)

Matrix products: default

locale:
[1] LC_COLLATE=Spanish_Chile.utf8  LC_CTYPE=Spanish_Chile.utf8    LC_MONETARY=Spanish_Chile.utf8
[4] LC_NUMERIC=C                   LC_TIME=Spanish_Chile.utf8    

time zone: America/Santiago
tzcode source: internal

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
 [1] leaflet.extras_2.0.1 leaflet_2.2.2        lubridate_1.9.3      forcats_1.0.0        stringr_1.5.1       
 [6] dplyr_1.1.4          purrr_1.0.2          readr_2.1.5          tidyr_1.3.0          tibble_3.2.1        
[11] ggplot2_3.4.4        tidyverse_2.0.0      sf_1.0-16            sits_1.5.1          

loaded via a namespace (and not attached):
 [1] gtable_0.3.4       htmlwidgets_1.6.4  tzdb_0.4.0         vctrs_0.6.5        tools_4.3.1        crosstalk_1.2.1   
 [7] generics_0.1.3     parallel_4.3.1     proxy_0.4-27       fansi_1.0.5        pacman_0.5.1       pkgconfig_2.0.3   
[13] KernSmooth_2.23-21 RColorBrewer_1.1-3 lifecycle_1.0.4    compiler_4.3.1     munsell_0.5.0      leafsync_0.1.0    
[19] stars_0.6-6        htmltools_0.5.8.1  class_7.3-22       yaml_2.3.8         pillar_1.9.0       classInt_0.4-10   
[25] abind_1.4-5        tidyselect_1.2.1   digest_0.6.33      stringi_1.8.2      fastmap_1.2.0      grid_4.3.1        
[31] colorspace_2.1-0   cli_3.6.1          magrittr_2.0.3     dichromat_2.0-0.1  XML_3.99-0.17      utf8_1.2.4        
[37] e1071_1.7-14       withr_2.5.2        scales_1.3.0       warp_0.2.1         timechange_0.3.0   slider_0.3.1      
[43] hms_1.1.3          rlang_1.1.2        Rcpp_1.0.11        glue_1.6.2         DBI_1.2.3          rstudioapi_0.16.0 
[49] R6_2.5.1           units_0.8-5    

[gilbertocamara]

Dear @paulacopelli, this error could be caused by a mismatch between the format of your input data ("puntos totales"). the function sits_get_data() accepts samples in different formats. The most common would be CVS files or SHP files. In these cases, the function requires you to provide a valid path (e.g. "/path_to_my_files/puntos_totales.shp" or "/path_to_my_files/puntos_totales.csv".

An alternative our be to read the SHP files as an sf object, for example

puntos_totales <- sf::st_read("/path_to_my_files/puntos_totales.shp") 

This sf object can be used as a samples parameter to the sits_get_data() function.

Could you share with us your sample file?