diff --git a/rscder/utils/project.py b/rscder/utils/project.py
index ee2ef97..3c16efe 100644
--- a/rscder/utils/project.py
+++ b/rscder/utils/project.py
@@ -431,6 +431,9 @@ class RasterLayer(BasicLayer):
         '''
         ds1:gdal.Dataset = gdal.Open(self.path)
         ds2 :gdal.Dataset = gdal.Open(other.path)
+        # if ds1.RasterXSize == ds2.RasterXSize and ds1.RasterYSize == ds2.RasterYSize:
+        #     return 0
+    
         geo1=ds1.GetGeoTransform()
         geo2=ds2.GetGeoTransform()
         map1xy=[imageRC2geo(geo1,0,0),imageRC2geo(geo1,ds1.RasterXSize,ds1.RasterYSize)]
@@ -446,9 +449,9 @@ class RasterLayer(BasicLayer):
         if ds1 is None or ds2 is None:
             Project().message_box.error('图层打开失败')
             return -1
-        if not ds1.GetProjection()==ds2.GetProjection():
-            Project().message_box.error('投影不一致')
-            return -1
+        # if not ds1.GetProjection()==ds2.GetProjection():
+        #     Project().message_box.error('投影不一致')
+        #     return -1
         elif (map1xx[0]>map2xx[1] or map1xx[1]<map2xx[0])or(map1yy[0]>map2yy[1] or map1yy[1]<map2yy[0] ):
             Project().message_box.error('图层无重叠区域')
             return -1
@@ -814,7 +817,10 @@ class PairLayer(BasicLayer):
             gridgeo=[self.mask.xy[0],self.l1_geo[1],self.l1_geo[2],self.mask.xy[1],self.l1_geo[4],self.l1_geo[5]]
             self.grid = GridLayer(self.proj, gridgeo , self.size[0], self.size[1], cell_size=Project().cell_size)
             self.grid.set_layer_parent(self)
-        return self.checked!=-1
+            self.checked = True
+        else:
+            self.checked = False
+        return self.checked
 
     def add_result_layer(self, result):
         result.set_layer_parent(self)