From 97b1a4298a3ba502c63e433db294e7e904be15f4 Mon Sep 17 00:00:00 2001
From: 13693261870 <252740454@qq.com>
Date: 星期六, 16 九月 2023 08:30:33 +0800
Subject: [PATCH] 元数据添加最值
---
src/main/java/com/moon/server/service/data/ReadRasterService.java | 28 +++++++++++++++++++++++++++-
1 files changed, 27 insertions(+), 1 deletions(-)
diff --git a/src/main/java/com/moon/server/service/data/ReadRasterService.java b/src/main/java/com/moon/server/service/data/ReadRasterService.java
index 5202c78..2f1ffaf 100644
--- a/src/main/java/com/moon/server/service/data/ReadRasterService.java
+++ b/src/main/java/com/moon/server/service/data/ReadRasterService.java
@@ -15,6 +15,8 @@
import org.springframework.stereotype.Service;
import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
/**
* 璇诲彇鏍呮牸鏈嶅姟
@@ -86,6 +88,8 @@
mf.setCt(null == colorTable ? null : colorTable.toString());
// 楂樼▼鍩哄噯
mf.sethDatum(null);
+ // 璁剧疆鏈�鍊�
+ setMinAndMax(ds, mf);
// 鍒嗚鲸鐜�
double[] tr = new double[6];
@@ -175,7 +179,7 @@
* 鑾峰彇Dataset鐨勬渶澶х偣
*/
private Geometry getMaxPoint(Dataset ds) {
- /**
+ /*
* transform[0] 宸︿笂瑙抶鍧愭爣
* transform[1] 涓滆タ鏂瑰悜鍒嗚鲸鐜�
* transform[2] 鏃嬭浆瑙掑害, 0琛ㄧず鍥惧儚 "鍖楁柟鏈濅笂"
@@ -217,4 +221,26 @@
return point;
}
+
+ /**
+ * 璁剧疆鏈�鍊�
+ * GDALRasterBand::GetHistogram聽鈥嬧�嬬粺璁＄洿鏂瑰浘
+ */
+ private void setMinAndMax(Dataset ds, MetaFileEntity mf) {
+ List<Double> minList = new ArrayList<>();
+ List<Double> maxList = new ArrayList<>();
+
+ for (int i = 1; i <= ds.getRasterCount(); i++) {
+ Double[] min = new Double[1];
+ Double[] max = new Double[1];
+ ds.GetRasterBand(i).GetMinimum(min);
+ ds.GetRasterBand(i).GetMaximum(max);
+
+ minList.add(min[0]);
+ maxList.add(max[0]);
+ }
+
+ mf.setMin(StringHelper.join(minList, ","));
+ mf.setMax(StringHelper.join(maxList, ","));
+ }
}
--
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