diff --git a/HPPA/HPPA.cpp b/HPPA/HPPA.cpp
index bc516a6..41bcbb6 100644
--- a/HPPA/HPPA.cpp
+++ b/HPPA/HPPA.cpp
@@ -1182,12 +1182,15 @@ void HPPA::PlotSpectral(int state)
 		QLineSeries *series = new QLineSeries();
 		//series->clear();//////////////////////////////
 		int sampleCount = m_Imager->getSampleCount();
+		int bandCount = m_Imager->getBandCount();
+		int tmp = int(bandCount / 2);
+		//std::cout << tmp << std::endl;
 		for (size_t i = 0; i < sampleCount; i++)
 		{
 			//mallocÉêÇëµÄÄÚ´æÓ÷¨1£º¿ÉÒÔµ±×öÊý×éÓÃ
 			//series->append(i, m_Imager->buffer[i + 5 * 900]);
 			//series->append(i, m_Imager->buffer[900 * 150 + i]);
-			series->append(i, m_Imager->buffer[1368 * 150 + i]);
+			series->append(i, m_Imager->buffer[sampleCount * tmp + i]);
 		}
 
 		QChart *chart = new QChart();
diff --git a/HPPA/about.ui b/HPPA/about.ui
index 7c2799a..4e17e1a 100644
--- a/HPPA/about.ui
+++ b/HPPA/about.ui
@@ -70,7 +70,7 @@
     </rect>
    </property>
    <property name="text">
-    <string>版本：2.0</string>
+    <string>版本：T2.1</string>
    </property>
   </widget>
   <widget class="QLabel" name="label_4">