GIS Lab6 課程筆記 空間插值方法，反距離權重法，克里金插值，

第一步，dem範圍內可以用來插值的選點

 

Make a feature class of those stations located only in New Jersey (NJ), New York (NY), and Pennsylvania (PA).  Open Attribute Table > Table Options > Select by Attributes > Method: Create a new selection, where “STATE” = ‘NJ’ or state = ‘NY’ or state = ‘PA’.  Apply.  Confirm that only the climate stations in New Jersey, New York, and Pennsylvania were selected.

 

將選中的站點導出

點數據到面數據的轉換

反距離權重法 Inverse Distance Weighting

距離越大，權重越小

 

還要輸出爲非臨時文件

相比，克里金插值較好，結果比較連貫。

IDW不會集中突變。

導出標準誤差

 

重採樣

 

選擇處理的範圍

 

GDD = (some weighting coefficient * elevation value) + (some weighting coefficient *

north-of-equator value) + the Y intercept

線性模型

GDD = ( - 1.76 * elevation) + ( - 0.00212 *  northing-value) + 12741