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The following step-by-step instructions and screenshots are based on the Windows 10 operating system with the Windows Classic desktop theme and ArcGIS Pro 2.1.3 software. If your personal system configuration varies, you may experience minor differences from the instructions and screenshots. PART I: Install the R-ArcGIS bridge Download R and RStudio First of all, you need to download and set up R and RStudio (RStudio is a free integrated development environment for R). R link (recommend to download R 3.2.2 or later): https://cran.mtu.edu/bin/windows/base/ R Studio link: https://rstudio.com/products/rstudio/download/ For both, accept all defaults in the installation wizard. Prepare data on Houston crime statistics Though you can Google search Houston crime GIS data and find the shapefile (with the link: https://cohgis-mycity.opendata.arcgis.com/datasets/hpd-nibrs-crime), it only contains around 4,000 cases, which is far from complete. As a remedy, we need to download the data from Houston Crime Statistics (with the link: https://www.houstontx.gov/police/cs/Monthly_Crime_Data_by_Street_and_Police_Beat.htm). For example, we can focus on the data of year 2020 till end of May (see the following screenshot). Notice that, for simplicity, I only use the crime cases of the first 10 days of year 2020, that is, dating from January 1, 2020 to January 10, 2020 (I choose 10 days because the step in Part II using Create Space Time Cube by Aggregating Points requires at least 10 time step intervals (in this case, it requires at least 10 days if the time step interval is set as 1 day). Create a new project in ArcGIS ProAs mentioned above, download the houston-crime-sample.rar file. Locate the downloaded file on your computer and extract its contents to a folder named houston-crime-sample in a location of your choice. Open the houston-crime-sample and you will see houston-crime.gdb, the geodatabase which has crime data that you will add to a map.Start ArcGIS Pro. Under New, click Map. In the Create a New Project window, for Name, type Houston Crime Analysis. For Location, browse to and choose your houston-crime-sample folder. Uncheck Create a new folder for this project. Click OK, then the project is created. In the Catalog pane, on the Project tab, expand Folders and expand the houston-crime-sample folder. Expand the houston-crime.gdb geodatabase, right-click the Houston_Crimes_Sample feature class, and choose Add To Current Map. As described above, this map shows locations where crimes occurred from January 1, 2020 through January 10, 2020 in the greater Houston area. This is only a small sample for crime analysis, but the general procedure is the same. You can apply this tutorial for larger data sets of crime statistics. Install the R-ArcGIS bridge: automatical method/manual methodR-ArcGIS bridge is a useful tool for you to reading and writing data to and from ArcGIS Pro and R. Once it is installed, you can also begin running script tools that reference an R script.Here are two methods to install R-ArcGIS bridge, automatical or manual. If you do not have the ArcGIS R integration package installed, next to Please install the ArcGIS R integration package, click Install package and choose Install package from the Internet. When asked to confirm the installation, click Yes, and when the installation is complete, click Close.If you already have the ArcGIS R integration package installed, next to Installed 'arcgisbinding' package version, click the Check for updates button and choose Check package for updates to ensure that you have the latest version of the package. PART II: Basic statistical analysis (Optional) Project the shapefile For Input Dataset or Feature Class, choose Houston_Crimes_Sample (or the name you created by your own for output feature class of geocoding addresses). For Output Dataset or Feature Class, name it as Houston_Crimes_Sample_Projected as an example. For Output Coordinate System, click the globe icon and choose Projected coordinate system > World > WGS 1984 World Mercator. Click OK. It should look like the following: Aggregate point data by counts within a defined location For Input Features, choose San_Francisco_Crimes. For Output Space Time Cube, browse to your San-Francisco folder and name the output San_Francisco_Crimes_Space_Time_Cube.nc. For Time Field, choose Dates. For Time Step Interval, type 1 and choose Months. For Time Step Alignment, confirm that End time is chosen. For Aggregation Shape Type, choose Hexagon grid. For Distance Interval, type 300 and choose Meters. Analyze crime hot spots: One step forward PART III: Enhance the dataset with additional attributes Add additional attributes to the original dataset Further prepare the dataset PART IV (KEY SECTION): Conduct statistical analysis using R and ArcGIS Pro Bridge your data into R Calculate smoothed crime rates Continue analysis in ArcGIS Pro Identify areas with unusually high crime rates
Create a correlation matrix in R to evaluate attribute relationships |