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Back again with KML and st_write

3 messages · Erin Hodgess, Roger Bivand

Original
Erin Hodgess
# 
Hi everyone

Hope you're having a nice weekend!

I'm still having trouble with the st_write.  It is doing the polygons
perfectly, but no fill Color.

Use this link to get the data:
https://www.dropbox.com/s/c2si2neeu179e8d/sg1.RData?dl=0

load("sg1.RData")

library(dplyr)
library(leaflet)
library(sf)

pal1 <- colorBin("YlOrRd",miej.sg$MiEJScreen,
bins=c(0,50,60,70,100))

popup1 <- paste(
"EJ: ",miej.sg$MiEJScreen,"<br>",
"Tract",substring(miej.sg$GEOID,6,11),"<br>",
"Zip",miej.sg$zip,"<br>")

#Full graph
 m5a <- leaflet() %>% #addTiles() %>%
 addPolygons(data=miej.sg,fillColor = ~pal1(miej.sg$MiEJScreen),
 popup=~popup1,
  fillOpacity=0.7,weight=2.5,color="#301934",opacity=1) %>%

 addLegend(pal=pal1,values=miej.sg$MiEJScreen,title="EJ Score",
 position="bottomright")

Now, if I use "st_write", the KML file is produced, but no fill color.

st_write(miej.sg,"test1a.kml",
fillColor=pal1(miej.sg$MiEJScreen))

I have tried all sorts of combinations with layer_options as well,
but no good.

Thanks for any help!

Sincerely,
Erin

Erin Hodgess, PhD
mailto: erinm.hodgess at gmail.com
Erin Hodgess
# 
Hello again

I got a solution at last.  I downloaded geoR, RandomFields, landmap, and
plotKML. I got them from the archives.

Anyhow, the solution is not bad using the plotKML package.

 pal1 <- colorBin("YlOrRd",miej.sg$MiEJScreen,
 bins=c(0,50,60,70,100))
 xp <- pal1(miej.sg$MiEJScreen)
plotKML(miej.sg,fill=xp,"erin1b.kml")

So that is a particular solution.

Thanks,
Erin




Erin Hodgess, PhD
mailto: erinm.hodgess at gmail.com


On Sat, Jun 4, 2022 at 11:20 AM Erin Hodgess <erinm.hodgess at gmail.com>
wrote:

  
  


  


      

    

    
1 day later

    

      
      

        


  

        

      Roger Bivand
    

    

      
      #
    

  


  

      
On Sat, 4 Jun 2022, Erin Hodgess wrote:

        

            

      
      
      
    

        
As you note, the archiving of packages has had consequences for packages 
using them (and further downstream too).

sf_write() can write KML files, but GDAL/OGR has two drivers: KML, which 
is simpler, and LIBKML which requires an extra external library when 
building GDAL. See https://gdal.org/drivers/vector/kml.html#vector-kml and 
https://gdal.org/drivers/vector/libkml.html#vector-libkml. However the 
latest libkml is from December 2015, suggesting that no active development 
is occurring. plotKML is described in 
https://www.jstatsoft.org/article/view/v063i05, and does pass R CMD check 
cleanly, so was probably archived when a package it imported was archived; 
it could be re-submitted, especially if someone wanted to help the 
current maintainer.

Roger