Fix bug in handlecheck method

erikhuizinga · erikhuizinga · commit 0cba18b8b406 · 2016-10-02T10:57:59.000+02:00
handlecheck would error when an empty legend object is passed to it. This
commit implements detection of an empty legend.
diff --git a/legtools.m b/legtools.m
@@ -236,7 +236,7 @@ function adddummy(lh, newStrings, plotParams)
         function lh = handlecheck(src, lh)
             % Make sure lh exists and is a legend object
             assert( ...
-                isgraphics(lh, 'legend') && isvalid(lh), ...
+                ~isempty(lh) && isgraphics(lh,'legend') && isvalid(lh), ...
                 sprintf('legtools:%s:InvalidLegendHandle', src), ...
                 'Invalid legend handle provided.' ...
                 )

Original file line number	Diff line number	Diff line change
`@@ -236,7 +236,7 @@ function adddummy(lh, newStrings, plotParams)`
`236`	`236`	`function lh = handlecheck(src, lh)`
`237`	`237`	`% Make sure lh exists and is a legend object`
`238`	`238`	`assert( ...`
`239`		`- isgraphics(lh, 'legend') && isvalid(lh), ...`
	`239`	`+ ~isempty(lh) && isgraphics(lh,'legend') && isvalid(lh), ...`
`240`	`240`	`sprintf('legtools:%s:InvalidLegendHandle', src), ...`
`241`	`241`	`'Invalid legend handle provided.' ...`
`242`	`242`	`)`