object 'giLinks' not found. Error in link2GI::linkSAGA(returnPaths = T) : unused argument (returnPaths = T)

Question

object 'giLinks' not found. Error in link2GI::linkSAGA(returnPaths = T) : unused argument (returnPaths = T)

ahmedshovon opened this issue 6 years ago · 9 comments

giLinks<-get_gi()
Error in link2GI::linkSAGA(returnPaths = T) :
unused argument (returnPaths = T)

tPos <- uavRst::treepos(chm1,

                    minTreeAlt = minTreeAlt,

```
                    minCrownArea = 1,
```

                    maxCrownArea = maxCrownArea,

```
                    join = 1, 
```
```
                    thresh = 0.35,
```

                    giLinks = giLinks )

:: start crown identification...
Error in uavRst::treepos(chm1, minTreeAlt = minTreeAlt, minCrownArea = 1, :
object 'giLinks' not found

Answer 1 · 2018-04-26T21:35:05.000Z

You need to install the github version of link2GI. There are some major changes in comparison to the CRAN version.

Answer 2 · 2018-04-27T15:21:06.000Z

giLinks<-uavRst::get_gi()
Error in if (nrow(params_GRASS) == 1) { : argument is of length zero
In addition: Warning messages:
1: running command 'cmd.exe /c dir /B /S C:\grass*.bat' had status 1
Show Traceback

Rerun with Debug
Error in if (nrow(params_GRASS) == 1) { : argument is of length zero

Answer 3 · 2018-04-27T22:15:50.000Z

please send your sessioninfo
please check also that GRASS7.x SAGA QGIS and OTB are installed

Answer 4 · 2018-04-27T22:59:24.000Z

Do I need to install OTB as QGIS tool? Under the 'Available QGIS Data Provider Plugins' (Help--> About), OTB is not showing. Is there any way I can download it as a stand-alone software?

Answer 5 · 2018-04-27T23:23:17.000Z

Please follow as mentioned in the readme the installation instructions of the RQGIS team

Answer 6 · 2018-04-30T17:03:30.000Z

The OTB provider was removed from QGIS 3.0

https://gis.stackexchange.com/questions/273305/orfeo-toolbox-otb-algorithms-in-qgis-3-0

Answer 7 · 2018-04-30T19:34:06.000Z

I know. It is not a question of OTB in QGIS but OTB on your system. You may install them with QGIS or standalone it should word.
Please note I did not make any thests with QGIS based installations of QGIS 3.x. link2GI´ is a wrapper for the standalone binaries and it is also tested for QGIS` version <3.0

Answer 8 · 2018-04-30T19:57:13.000Z

Package seems working now. When I tried to produce dsm from given las data I have this error:

dsm1 <- uavRst::pc2dsm(lasDir = "lasdata.las",

                   gisdbase_path = projRootDir,

                   type_smooth = "gauss",

                   otb_gauss_radius = gauss,

                   grid_size = actual_grid_size,

                   GRASSlocation = "dsm",

                   grass_lidar_method = "mean",

                   giLinks = giLinks)[[1]]

Error: 'pc2dsm' is not an exported object from 'namespace:uavRst'

I have a CHM generated from lastools and lidR. I got this error.

tPos <- uavRst::treepos(chmR,

                    minTreeAlt = minTreeAlt,

```
                    minCrownArea = 1,
```

                    maxCrownArea = maxCrownArea,

```
                    join = 1, 
```
```
                    thresh = 0.35,
```

                    giLinks = giLinks )

:: start crown identification...
:: run pre-segmentation...
:: filter results...
:: find max height position...
:: calculate chm statistics
Error in ogrInfo(dsn = dsn, layer = layer, encoding = encoding, use_iconv = use_iconv, :
Cannot open data source

Answer 9 · 2018-09-22T16:15:04.000Z

pls retry with the updated version. if still not working you're welcome to reopen the issue