image.smooth Kernel smoother for irregular 2-d data Description Takes an image matrix and applies a kernel smoother to it. Missing values are handled using the…
View More Kernel smoother for irregular 2-d dataCategory: ArcGIS
Beyond Mapping III Topic 18: Understanding Grid-based Data
Grids and Lattices Build Visualizations — describes Lattice and Grid forms of map surface display Maps Are Numbers First, Pictures Later — discusses the numeric and geographic characteristics of…
View More Beyond Mapping III Topic 18: Understanding Grid-based DataGlobal Spatial Autocorrelation Indices – Moran’s I, Geary’s C and the General Cross-Product Statistic
By M.Sawada Department of Geography University of Ottawa Ottawa ON K1N 6N5 Introduction The analysis of spatially located data is one of the basic concerns…
View More Global Spatial Autocorrelation Indices – Moran’s I, Geary’s C and the General Cross-Product StatisticHow Spatial Autocorrelation: Moran’s I (Spatial Statistics) works
This tool measures spatial autocorrelation (feature similarity) based on both feature locations and feature values simultaneously. Given a set of features and an associated attribute,…
View More How Spatial Autocorrelation: Moran’s I (Spatial Statistics) worksArcGIS生成规则网格（Fishnet）
在利用ArcGIS处理数据时，有时需要对整个工作区域进行规则网格划分，这个在ArcGIS中是一件非常简单的事情，现在就将利用ArcGIS生成规则网格的步骤详细的介绍一下。 首先我有一个工作的范围，比如图一所示的范围： 图一 研究区范围 我要在研究区的范围内生成一个规则的网格，使其覆盖整个研究区域。比如说在整个研究区域生成5 km×5 km的网格。 （1）在ArcToolbos中，依次找到Data Management Tools—>Feature Class—>Create Fishnet，如图二所示。 图二 Create Fishnet位置 （2）在打开的对话框中进行如图三的设置，完成后点击确定即可生成网格，效果如图四所示。 图三 Create Fishnet设置 图四 生成的Fishnet效果 在图三中，Cell Size Width为网格宽度，Cell Size Height为网格高度，其单位为地图投影的单位；Number…
View More ArcGIS生成规则网格（Fishnet）Creating a quarter quarter section grid with Python
Download the Section Grid Toolbox – works with ArcGIS 10.1+ (contains 4 tools to make quarter and quarter quarter section grids with labels) I was tasked…
View More Creating a quarter quarter section grid with PythonCreate Excel Choropleth Maps from Shape Files
How to transform Shape Files into Microsoft Excel Choropleth Maps – including 2 Maps of Germany by Zip Codes On several occasions I thought (and…
View More Create Excel Choropleth Maps from Shape FilesHow to Make a US County Thematic Map Using Free Tools
By NATHAN YAU There are about a million ways to make a choropleth map. The problem is that a lot of solutions require expensive software or…
View More How to Make a US County Thematic Map Using Free ToolsHow to create an attractive choropleth map in R?
I’ve been experimenting with choropleth mapping techniques in R, having reaped the benefits of ggplot2 for creating beautiful graphs within a powerful data analysis package.…
View More How to create an attractive choropleth map in R?Using Contour Lines to Map Density of NYPD’s Stop and Frisk Data
Using Contour Lines to Map Density of NYPD’s Stop and Frisk Data July 13 2012 by Chris Herwig Using elevation contour lines is one of several ways…
View More Using Contour Lines to Map Density of NYPD’s Stop and Frisk Data