Bug: hereR::isoline fails: "Error in decode(encoded[[x]]): Invalid format version"

[nbanion]

For specific parameter combinations, hereR::isoline fails. In these cases, I would expect the function to either (1) return a polygon or (2) throw an error that makes my mistake more obvious.

This bug was the motivation to propose workaround #118 . As noted there, it probably makes sense to close that issue and just address the bug directly here.

Below I induce an error by playing with range.

library(hereR)
library(sf)
#> Linking to GEOS 3.8.0, GDAL 3.0.4, PROJ 6.3.1

# A test point.
point <- 
  c(-73.51263, 44.20958) %>% 
  st_point() %>% st_sfc() %>% st_sf(crs = "WGS84")

# Range 1800 (30 min) succeeds.
isoline(point, range = 1800)
#> Simple feature collection with 1 feature and 5 fields
#> geometry type:  POLYGON
#> dimension:      XY
#> bbox:           xmin: -73.88306 ymin: 43.82996 xmax: -73.31863 ymax: 44.64157
#> geographic CRS: WGS 84
#>   id rank           departure             arrival range
#> 1 NA    1 2021-05-12 16:07:03 2021-05-12 16:37:03  1800
#>                         geometry
#> 1 POLYGON ((-73.87688 44.2309...

# Range 3600 (60 min) fails.
isoline(point, range = 3600)
#> Error in decode(encoded[[x]]): Invalid format version

^{Created on 2021-05-12 by the reprex package (v2.0.0)}

[munterfi]

Hi, thanks for reporting!

This issue is already fixed in #121:

library(hereR)
set_verbose(TRUE)
library(sf)
#> Linking to GEOS 3.8.1, GDAL 3.1.4, PROJ 6.3.1

point <- 
  c(-73.51263, 44.20958) %>% 
  st_point() %>% st_sfc() %>% st_sf(crs = "WGS84")

isoline(point, range = 1800)
#> Sending 1 request(s) with 1 RPS to: 'https://isoline.router.hereapi.com/v8/isolines?...'
#> Received 1 response(s) with total size: 5 Kb
#> Simple feature collection with 1 feature and 5 fields
#> Geometry type: POLYGON
#> Dimension:     XY
#> Bounding box:  xmin: -73.90503 ymin: 43.84094 xmax: -73.31863 ymax: 44.64157
#> Geodetic CRS:  WGS 84
#>   id rank           departure             arrival range
#> 1 NA    1 2021-05-14 13:34:00 2021-05-14 14:04:00  1800
#>                         geometry
#> 1 POLYGON ((-73.89885 44.2254...

isoline(point, range = 3600)
#> Sending 1 request(s) with 1 RPS to: 'https://isoline.router.hereapi.com/v8/isolines?...'
#> Received 1 response(s) with total size: 5.9 Kb
#> Simple feature collection with 1 feature and 5 fields
#> Geometry type: MULTIPOLYGON
#> Dimension:     XY
#> Bounding box:  xmin: -74.28955 ymin: 43.42896 xmax: -73.11676 ymax: 45.04395
#> Geodetic CRS:  WGS 84
#>   id rank           departure             arrival range
#> 1 NA    1 2021-05-14 13:34:01 2021-05-14 14:34:01  3600
#>                         geometry
#> 1 MULTIPOLYGON (((-74.27719 4...

Are you using the latest version of the hereR and flexpolyline packages on CRAN?

packageVersion("flexpolyline")
#> [1] '0.2.3'
packageVersion("hereR")
#> [1] '0.7.0'

Session info

devtools::session_info()
#> ─ Session info ───────────────────────────────────────────────────────────────
#>  setting  value                       
#>  version  R version 4.0.5 (2021-03-31)
#>  os       macOS Big Sur 10.16         
#>  system   x86_64, darwin17.0          
#>  ui       X11                         
#>  language (EN)                        
#>  collate  en_US.UTF-8                 
#>  ctype    en_US.UTF-8                 
#>  tz       Europe/Zurich               
#>  date     2021-05-14                  
#> 
#> ─ Packages ───────────────────────────────────────────────────────────────────
#>  package      * version date       lib source        
#>  assertthat     0.2.1   2019-03-21 [1] CRAN (R 4.0.0)
#>  cachem         1.0.4   2021-02-13 [1] CRAN (R 4.0.2)
#>  callr          3.7.0   2021-04-20 [1] CRAN (R 4.0.2)
#>  class          7.3-18  2021-01-24 [1] CRAN (R 4.0.5)
#>  classInt       0.4-3   2020-04-07 [1] CRAN (R 4.0.0)
#>  cli            2.5.0   2021-04-26 [1] CRAN (R 4.0.2)
#>  crayon         1.4.1   2021-02-08 [1] CRAN (R 4.0.2)
#>  crul           1.1.0   2021-02-15 [1] CRAN (R 4.0.2)
#>  curl           4.3.1   2021-04-30 [1] CRAN (R 4.0.5)
#>  data.table     1.14.0  2021-02-21 [1] CRAN (R 4.0.2)
#>  DBI            1.1.1   2021-01-15 [1] CRAN (R 4.0.2)
#>  desc           1.3.0   2021-03-05 [1] CRAN (R 4.0.2)
#>  devtools       2.4.0   2021-04-07 [1] CRAN (R 4.0.2)
#>  digest         0.6.27  2020-10-24 [1] CRAN (R 4.0.2)
#>  dplyr          1.0.5   2021-03-05 [1] CRAN (R 4.0.2)
#>  e1071          1.7-6   2021-03-18 [1] CRAN (R 4.0.2)
#>  ellipsis       0.3.2   2021-04-29 [1] CRAN (R 4.0.2)
#>  evaluate       0.14    2019-05-28 [1] CRAN (R 4.0.0)
#>  fansi          0.4.2   2021-01-15 [1] CRAN (R 4.0.2)
#>  fastmap        1.1.0   2021-01-25 [1] CRAN (R 4.0.2)
#>  flexpolyline   0.2.3   2021-04-30 [1] CRAN (R 4.0.2)
#>  fs             1.5.0   2020-07-31 [1] CRAN (R 4.0.2)
#>  generics       0.1.0   2020-10-31 [1] CRAN (R 4.0.2)
#>  glue           1.4.2   2020-08-27 [1] CRAN (R 4.0.2)
#>  hereR        * 0.7.0   2021-04-16 [1] CRAN (R 4.0.2)
#>  htmltools      0.5.1.1 2021-01-22 [1] CRAN (R 4.0.2)
#>  httpcode       0.3.0   2020-04-10 [1] CRAN (R 4.0.2)
#>  jsonlite       1.7.2   2020-12-09 [1] CRAN (R 4.0.2)
#>  KernSmooth     2.23-18 2020-10-29 [1] CRAN (R 4.0.5)
#>  knitr          1.33    2021-04-24 [1] CRAN (R 4.0.2)
#>  lifecycle      1.0.0   2021-02-15 [1] CRAN (R 4.0.2)
#>  magrittr       2.0.1   2020-11-17 [1] CRAN (R 4.0.2)
#>  memoise        2.0.0   2021-01-26 [1] CRAN (R 4.0.2)
#>  pillar         1.6.0   2021-04-13 [1] CRAN (R 4.0.2)
#>  pkgbuild       1.2.0   2020-12-15 [1] CRAN (R 4.0.2)
#>  pkgconfig      2.0.3   2019-09-22 [1] CRAN (R 4.0.0)
#>  pkgload        1.2.1   2021-04-06 [1] CRAN (R 4.0.2)
#>  prettyunits    1.1.1   2020-01-24 [1] CRAN (R 4.0.0)
#>  processx       3.5.2   2021-04-30 [1] CRAN (R 4.0.5)
#>  proxy          0.4-25  2021-03-05 [1] CRAN (R 4.0.2)
#>  ps             1.6.0   2021-02-28 [1] CRAN (R 4.0.2)
#>  purrr          0.3.4   2020-04-17 [1] CRAN (R 4.0.0)
#>  R6             2.5.0   2020-10-28 [1] CRAN (R 4.0.2)
#>  Rcpp           1.0.6   2021-01-15 [1] CRAN (R 4.0.2)
#>  remotes        2.3.0   2021-04-01 [1] CRAN (R 4.0.2)
#>  rlang          0.4.11  2021-04-30 [1] CRAN (R 4.0.5)
#>  rmarkdown      2.7     2021-02-19 [1] CRAN (R 4.0.2)
#>  rprojroot      2.0.2   2020-11-15 [1] CRAN (R 4.0.2)
#>  sessioninfo    1.1.1   2018-11-05 [1] CRAN (R 4.0.0)
#>  sf           * 0.9-8   2021-03-17 [1] CRAN (R 4.0.2)
#>  stringi        1.5.3   2020-09-09 [1] CRAN (R 4.0.2)
#>  stringr        1.4.0   2019-02-10 [1] CRAN (R 4.0.2)
#>  testthat       3.0.2   2021-02-14 [1] CRAN (R 4.0.2)
#>  tibble         3.1.1   2021-04-18 [1] CRAN (R 4.0.2)
#>  tidyselect     1.1.1   2021-04-30 [1] CRAN (R 4.0.5)
#>  units          0.7-1   2021-03-16 [1] CRAN (R 4.0.2)
#>  usethis        2.0.1   2021-02-10 [1] CRAN (R 4.0.2)
#>  utf8           1.2.1   2021-03-12 [1] CRAN (R 4.0.2)
#>  vctrs          0.3.8   2021-04-29 [1] CRAN (R 4.0.2)
#>  withr          2.4.2   2021-04-18 [1] CRAN (R 4.0.2)
#>  xfun           0.22    2021-03-11 [1] CRAN (R 4.0.2)
#>  yaml           2.2.1   2020-02-01 [1] CRAN (R 4.0.0)
#> 
#> [1] /Library/Frameworks/R.framework/Versions/4.0/Resources/library

[nbanion]

I was out of date. After updating, the example works for me. Thanks for the fix!