The Invasive Species Data

The Invasive Species Forecasting System works with and generates various types of data. As of Spring 2004, the Analysis and Modeling Service of the ISFS works with one type of data known as a Model Array. A Model Array is the input dataset to the predictive algorithms. A Model Array is a subset of a Merged Dataset, which is a combination of Remote Sensed and Field data elements. An overview of the process to create a Merged Dataset is provided below. Many intermediate data products are created during this process and may be useful in Invasive Species work.

Merged Dataset

1. Convert XLS field data file into a CSV (file1.csv)
2. Extract UTMx, UTMy from file1.csv into file2.csv
3. Run file2.csv through value_from_coord_new.pro to extract imagery values, results are: [UTMx, UTMy, Pixelx, Pixely, NDVI, NDVI_amplitude, NDVI_mean, NDVI_phase, EVI, EVI_amplitude, EVI_mean, EVI_phase]
4. Append these values onto original XLS field data file, creating a merged data set
5. Then extract from merged data set a model array, per index (EVI, NDVI), example:[UTMx, UTMy, tPlants, EVI, EVI_amplitude, EVI_mean, EVI_phase]

Also See:

Other ISFS Services: