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What's New in ENVI Crop Science 1.1

What's New in ENVI Crop Science 1.1

This software release includes the following new and enhanced features.

  • Use the Create Zones tool to divide a single-band image into management zones. These are areas within a field that respond to different management applications—such as water, pesticides, and fertilizer—in a similar way. The result is a classification image where the classes represent unique application categories. It also creates vector output that contains attributes for each individual zone.
  • Use the Calculate Zone Metrics and Calculate Zone Metrics with Spectral Index tools to calculate statistics for each zone created with the Create Zones tool. They create a classification image showing the relative statistics of the zones, or a greyscale image showing actual statistical values of the zones.
  • Use the Convert Zones to Shapefile tool to convert a zones object to shapefile format.
  • Use the Find Developing Hotspot tool to look for anomalies between two rasters of the same area, from different dates. The result is a classification image that shows statistically significant differences during the intervening time period. For agricultural studies, this can be useful for identifying areas that are growing faster or slower than the raster as a whole. Or, it can reveal areas that were damaged by events such as hail storms and drought. A Find Developing Hotspots with Spectral Index tool is also provided. This tool accepts two multi-band images from different dates, and it requires you to choose a spectral index to compute for each image.
  • The Hotspot Analysis tool was renamed to Find Hotspots.
  • The Spectral Hotspot Analysis tool was renamed to Find Hotspots with Spectral Index.
  • The Crop Metrics and Crop Metrics with Spectral Index tools now calculate crop radius as part of the output metrics.

Programming Routines and Tasks


The following routine is new:

Routine

Description

ENVIAgZones

This is a reference to an ENVIAgZones object, which specifies the locations of management zones within a field.

The following ENVITasks are new:

Task

Description

ENVIAgCalculateAndRasterizeZoneMetricsTask

Calculate statistics from a single-band raster and an associated ENVIAgZones object. This task creates a classification raster showing the relative values of zones or a greyscale raster showing actual statistical values of zones.

ENVIAgCalculateAndRasterizeZoneMetricsWithSpectralIndexTask

Create a spectral index image and calculate statistics from it and an associated ENVIAgZones object. This task creates a classification raster showing the relative values of zones or a greyscale raster showing actual statistical values of zones.

ENVIAgCalculateZoneMetricsTask

Calculate statistics on individual zones contained in an ENVIAgZones object.

ENVIAgConvertZonesToShapefileTask

Convert an ENVIAgZones object to a shapefile.

ENVIAgCreateZonesTask

Divide a single-band image into management zones. This task creates a classification image, where the classes represent the zones, and the colors indicate the application categories they belong to. It also creates a zones output object that contains data for each individual zone.

ENVIAgDevelopingHotspotColorSliceTask Create a classification raster based on color slices that represent the difference of Z-scores between two rasters calculated from Getis-Ord Gi* hotspot analysis.

ENVIAgFindDevelopingHotspotsTask

Compare two single-band rasters of the same area, from different dates. Find areas where their differences are statistically significant from the mean difference between the rasters. The result is a classification image of statistically significant areas.

ENVIAgFindDevelopingHotspotsWithSpectralIndexTask

Create a spectral index for two rasters of the same area, from different dates. Find areas where their differences are statistically significant as compared to the mean difference between the rasters. The result is a classification image of statistically significant areas.

ENVIAgRasterizeZonesTask

Create a raster of zone metrics. The result is a classification image showing the relative pattern of a selected zone metric, or a greyscale image showing actual values of a selected zone metric.

A revision key was added to all task files, so that users can keep track of task definition changes between versions.

ENVIParameterENVIAgCrops is a new parameter class for the ENVIAgCrops data type. It provides better dehydration and rehydration support for DEFAULT or VALUE parameters in task templates. This is for advanced programmers who are building custom tasks.



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