GIS Lab6 课程笔记 空间插值方法，反距离权重法，克里金插值，

第一步，dem范围内可以用来插值的选点

 

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.

 

将选中的站点导出

点数据到面数据的转换

反距离权重法 Inverse Distance Weighting

距离越大，权重越小

 

还要输出为非临时文件

相比，克里金插值较好，结果比较连贯。

IDW不会集中突变。

导出标准误差

 

重采样

 

选择处理的范围

 

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

north-of-equator value) + the Y intercept

线性模型

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