From c6ef63f76ac7b4e718d4208bcba4366deb981417 Mon Sep 17 00:00:00 2001
From: Yi Zhang <zhangyiss@icloud.com>
Date: Mon, 8 Jun 2020 22:28:15 +0800
Subject: [PATCH] fixed a bug for gmtxy-image/2 when range starts by a negative
 value

---
 gmtxy-image.sh  | 2 +-
 gmtxy-image2.sh | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/gmtxy-image.sh b/gmtxy-image.sh
index 08e58d2..ca1f987 100755
--- a/gmtxy-image.sh
+++ b/gmtxy-image.sh
@@ -76,7 +76,7 @@ else
 	fi
 	#根据横纵坐标的范围计算图片的长和高 我们默认图片宽度为1.5i
 	range_coor=(${range//// })
-	pic_height=`echo "scale=4; 1.5 * (${range_coor[3]}-${range_coor[2]})/(${range_coor[1]}-${range_coor[0]})"|bc`
+	pic_height=`echo "scale=4; 1.5 * (${range_coor[3]} - ${range_coor[2]})/(${range_coor[1]} - ${range_coor[0]})"|bc`
 	# 设置绘图参数
 	gmt gmtset \
 	FONT_ANNOT_PRIMARY=10.5p,Times-Roman,black \
diff --git a/gmtxy-image2.sh b/gmtxy-image2.sh
index 9127453..cf2c4ee 100755
--- a/gmtxy-image2.sh
+++ b/gmtxy-image2.sh
@@ -180,7 +180,7 @@ else
 	fi
 	#根据横纵坐标的范围计算图片的长和高 我们默认图片宽度为1.5i
 	range_coor=(${range//// })
-	pic_height=`echo "scale=4; ${layouts[0]%i}  * (${range_coor[3]}-${range_coor[2]})/(${range_coor[1]}-${range_coor[0]})"|bc`
+	pic_height=`echo "scale=4; ${layouts[0]%i} * (${range_coor[3]} - ${range_coor[2]})/(${range_coor[1]} - ${range_coor[0]})"|bc`
 
 	# 输出一个bash脚本的头部到屏幕
 	if [[ ${run_command} == 0 && ${from_open} == '>' ]]; then