From 2616b1cdb3b78a4d13c83cb03e63565daa2e0463 Mon Sep 17 00:00:00 2001
From: Edison Guo <edison.guo@anu.edu.au>
Date: Tue, 10 Nov 2020 10:27:56 +1100
Subject: [PATCH] added user code for getFeatureInfo

---
 processor/feature_info.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/processor/feature_info.go b/processor/feature_info.go
index 42c6ec7c..34524634 100644
--- a/processor/feature_info.go
+++ b/processor/feature_info.go
@@ -187,7 +187,10 @@ func getRaster(ctx context.Context, params utils.WMSParams, conf *utils.Config,
 
 	var namespaces []string
 	var bandExpr *utils.BandExpressions
-	if len(styleLayer.FeatureInfoBands) > 0 {
+	if params.BandExpr != nil {
+		namespaces = params.BandExpr.VarList
+		bandExpr = params.BandExpr
+	} else if len(styleLayer.FeatureInfoBands) > 0 {
 		namespaces = styleLayer.FeatureInfoExpressions.VarList
 		bandExpr = styleLayer.FeatureInfoExpressions
 	} else if len(conf.Layers[idx].FeatureInfoBands) > 0 {