# Spatial Analyst

Pubblicato: Martedì, 20 Maggio 2014
Scritto da Supergeo Italia

**SuperGIS Spatial Analyst** è uno potente modulo GIS per l'elaborazione dei dati spaziali. Consente la creazione, l'analisi e lìinterrogazione dei dati raster. Gli utenti possono utilizzare questo modulo per analizzare i dati spaziali in differenti modi e con differenti punti di vista.

**Caratteristiche**

**Spatial Polygon Analysis**

- Distance function is supported, and it contains the following analyses:
*Straight line analyst: Contains three types of calculation methods, straight distance, allocation and direction.**Cost weight analyst: Can generate cost distance chart, cost back link chart and cost allocation chart.**Shortest path analyst**Corridor analyst*- Density function is supported, which is performed using either Simple or Kernel.
- Interpolation is supported, which includes Inverse Distance Weighted (IDW) and trend, allowing users to use the sample point data to estimate the data for a continuous surface.

**Surface Analysis**

- Viewshed function is supported, allowing users to analyze by either importing a known point or selecting a point on the map by mouse.
- Slope analysis is supported, where the display methods include degree, radian and percentage.
- Aspect analysis is supported.
- Curve analysis is supported, providing three analysis methods: Normal, Profile and Plan.
- Isopleth analysis is supported.
- Cut/Fill analysis is supported.
- Hillshade analysis is supported, allowing users to set up the azimuth and altitude.
- Cross Section illustration is supported.

**Hydrology Analysis**

- Sink: Identify sinks with flow direction
- Fill: iteratively fill the sinks based on elevation and flow direction to
- Flow length: provide Downstream and Upstream methods
- Flow direction: create eight-direction flow direction modeling by comparing the elevation value of pixels
- Flow accumulation: to know the locations of surface runoff, river, mountain ridge by analyzing the data of flow direction
- Stream link: to create stream link info by analyzing flow direction, the intersection of rivers
- Stream order: calculate with Shreve stream ordering method
- Basin: analyze pour point location with flow direction and find the range of watershed
- Snap pour point: to estimate subset by setting pour points and system adjusting
- Watershed: allows to set the threshlod to define the minimum volume; classify watershed by using flow direction, watershed location, and pond location.

**Image Data Statistics and Processing**

- Re-sampling of raster layers is supported. It provides three sampling methods: Nearest Neighbor, Bilinear and Cubic.
- Ten statistics are provided for Cell Statistics, Zonal Statistics and Neighborhood Statistics: majority, minority, maximum, minimum, average, median, standard deviation, range, sum and variance.
- When using the Neighborhood Statistics, users can use rectangle, circle, annulus and wedge-shapes to select neighborhood extent.
- A calculator function is provided, allowing users to compile statistics on the raster data for logical and mathematical calculations.
- Users can perform image combination using the calculator function to obtain the results of image clipping.
- Raster to Vector data conversion is supported.
- Vector to Raster data conversion is supported.
- Image filter function is provided. It has many functions, including low-frequency filter, high-frequency filter, linear probing, edge enhancement, and so on.
- Image Reclassify function is supported.
- Legend settings for raster data are supported.
- Mask setting for raster data is supported.

**Raster Data Toolset**

- Enables users to create raster data from point, polyline, polygon vector layers by four methods: constant, normal, random and text.
- Conversion of raster data to text files is supported.
- Various analysts are provided in the Toolset:
- Distance Analyst
- Conditional Analyst
- Extract Analyst
- Local Analyst
- Neighborhood Analyst
- Zonal Analyst
- Generalize Analyst
- Math Calculate

**Support File Format**

- Vector files in GEO (SuperGeo GEO Format) and Shapefile formats are supported.
- Raster data in LAN and GeoTiff formats are supported.

**Brochure**