求助如何用matlab的morans_I函数计算局部morans I指数？

1关注
4粉丝

已卖：175份资源

讲师

5%

还不是VIP/贵宾

-

TA的文库 其他...

经管读书

0%

威望: 0 级
论坛币: 1389 个
通用积分: 0.0600
学术水平: 2 点
热心指数: 6 点
信用等级: 2 点
经验: 351 点
帖子: 289
精华: 0
在线时间: 481 小时
注册时间: 2010-9-23
最后登录: 2024-6-29

楼主

wanghan2010

发表于 2014-5-21 13:10:06 |AI写论文

是否 +2 论坛币

k人参与回答

经管之家送您一份

应届毕业生专属福利!

求职就业群

赵安豆老师微信：zhaoandou666

经管之家联合CDA

送您一个全额奖学金名额~ !

立即领取

感谢您参与论坛问题回答

经管之家送您两个论坛币！

+2 论坛币

已知有13个地区，它们的人均GDP为A=[26998;30840;34892;41099;45444;50467;58204;64491;66940;73856;81658;87475;19141;]

临界矩阵为
W=[0,1,0,0,1,0,1,0,1;1,0,0,1,1,0,0,1,0;0,0,0,0,0,0,1,0,0;0,1,0,0,0,1,0,0,0;1,1,0,0,0,0,1,1,0;0,0,0,1,0,0,0,0,0;1,0,1,0,1,0,0,1,1;0,1,0,0,1,0,1,0,0;1,0,0,0,0,0,1,0,0;1,0,0,1,0,1,0,0,0;0,0,0,0,0,0,0,0,0;0,0,1,0,0,0,0,0,0;0,0,1,0,0,0,1,1,0;]

然后我找到了Moran_I指数的函数
HELP morans_I
  PURPOSE: calculate global Moran's I for an input grid (matrix) by calculating all
         local Moran's I for a given moving windows size using a weight matrix.
  -------------------------------------------------------------------
  USAGE: M = moransI(grid, W, s);
  where: [grid] is the matrix to analyse
      [W] is the normalized weight matrix of the size the local Moran's
         I will be calculated for (uneven sized!)
      [s] is an optional flag to use zscores of input values for
      calculation. Set to 'true' if zscores of local grid should be
      calculated. Leave blank if not desired or input values are already
      standardized.
  -------------------------------------------------------------------------
  OUTPUTS:
      [M] matrix of all local Moran's I
  -------------------------------------------------------------------
  NOTES: Weight matrix needs to be 'moving window' style, not contiguity
      matrix: Moran's I is calculated and weighted for neighbours to center cell.
      Matrix needs to be normalized (weights sum to 1) and center cell weight
      will be set to 0 if not already. Uses localmoran.m
      -> Use nanmean(M(:)) to get the average global Moran's I.

  See Anselin (1995, 'LISA.', Geogr. Analysis 27(2),p.93f) for details on
  standardized variables in calculation of local Moran's I.

  EXAMPLE:  M = moransI(rand(20,20),ones(5,5),'true')

  Felix Hebeler, Geography Dept.,de University Zurich, March 2006.

请问使用M=Morans_I(A,W,'ture')计算吗？为什么算出来都是NaN？
求大神帮助