Fix #435

NEWS.md

@@ -3,6 +3,7 @@ If you are viewing this file on CRAN, please check [the latest news on GitHub](h
 ## lidR v3.1.4 (Release date: ...)
 
 - Doc: fix some code block rendering in `catalog_apply` man page
+- Fix: fix catalog processing engine edge case when the last chunks fail. See ([#435](https://github.com/Jean-Romain/lidR/issues/435)).
 
 ## lidR v3.1.3 (Release date: 2021-05-20)
 

R/clusters_apply.R

@@ -181,7 +181,7 @@ cluster_apply = function(.CLUSTER, .FUN, .PROCESSOPT, .OUTPUTOPT, .GLOBALS = NUL
       percentage <-  engine_compute_progress(states)
       engine_update_progress(pb, .CLUSTER[[j]], states[j], percentage, j)
 
-      if (states[j] == CHUNK_ERROR & abort)
+      if (states[j] == CHUNK_ERROR && abort)
       {
         if (j == 1)
         {
@@ -195,6 +195,11 @@ cluster_apply = function(.CLUSTER, .FUN, .PROCESSOPT, .OUTPUTOPT, .GLOBALS = NUL
         }
       }
 
+      if (states[j] == CHUNK_ERROR && !abort) {
+        output[[j]] <- NULL
+        next
+      }
+
       if (states[j] == CHUNK_NULL) next
 
       output[[j]] <- suppressWarnings(future::value(futures[[j]]))