added rasterization for space -> tile transform

1 files changed, 4 insertions, 3 deletions

diff --git a/space.js b/space.js
index d4e4567..d7f68e8 100644
--- a/space.js
+++ b/space.js
@@ -134,10 +134,11 @@ function Space(){
   this.subsection = function(range){ // range is a coordinate pair
     // Similarly excludes this.loc
     newspace = new Space();
-    for (let line=range[0][0]; line<=range[1][0]; line++){
+    for (let line=range[0][0]; line<range[1][0]; line++){
       newspace.data.push([]);
-      for (let chr=range[0][1]; chr<=range[1][1]; chr++){
-        newspace.data[line-range[0][0]].push(this.data[line][chr] || '');
+      let thisline = this.data[line] || [];
+      for (let chr=range[0][1]; chr<range[1][1]; chr++){
+        newspace.data[line-range[0][0]].push(thisline[chr] || '');
       }
     }
     return newspace;