diff --git a/genimage/go.go b/genimage/go.go
index ec5d3c9..b5b2616 100644
--- a/genimage/go.go
+++ b/genimage/go.go
@@ -7,15 +7,13 @@ import (
 
 func Pic(dx, dy int) [][]uint8 {
 	result := make([][]uint8, dy)
-	for i := 0; i < dx; i++ {
-		result[i] = make([]uint8, dx)
-	}
     var ii, jj uint8
-	for i := 0; i < dy; i++ {
-		for j := 0; j < dy; j++ {
+    for j := 0; j < dy; j++ {
+		result[j] = make([]uint8, dx)
+        for i := 0; i < dx; i++ {
             ii = uint8(i)
             jj = uint8(j)
-			result[i][j] = ii ^ jj
+			result[j][i] = ii ^ jj
 		}
 	}
 	return result
diff --git a/pic/pic.go b/pic/pic.go
index d79ea08..006c993 100644
--- a/pic/pic.go
+++ b/pic/pic.go
@@ -15,7 +15,7 @@ import (
 func CalculateImage(f func(int, int) [][]uint8) image.Image {
 	const (
 		dx = 256
-		dy = 256
+		dy = 1024
 	)
 	data := f(dx, dy)
 	m := image.NewNRGBA(image.Rect(0, 0, dx, dy))