3_visualization¶
This script can be used to visualize final assessment products as spatially smoothed and magnitude-thresholded maps.
Product specification¶
Assessment products to be visualized are read from specified Image Collection.
| setting | description |
|---|---|
| FINAL_PRODUCTS | Image Collection with assessments by state |
Visualization Parameters¶
The following parameters are used to add results to the Map panel as Layers:
| parameter | type | default | explanation |
|---|---|---|---|
| START_ASSESS | int | 2015 |
first year to add to map |
| END_ASSESS | int | 2021 |
last year to add to map |
| THRESHOLD | int | 2 |
condition score threshold |
| MIN_NOBS | int | 3 |
mask pixels with too few observations |
| OUTPUT_SCALE | int | 1000 |
output scale (multiplier) |
| MIN | int | -4 |
min score for visualization palette |
| MAX | int | 4 |
max score for visualization palette |
| PALETTE | list | ['red', 'orange', 'white', 'teal', 'darkblue'] |
list of colors for palette |
Map¶
Results are color-coded based on condition score value such that more negative changes in vegetation greenness are shown in redder tones and more positive changes are shown in cooler tones. Pixel transparency is set to scale with standard deviation such that pixels with greater uncertainty/disagreement in score estimates are shown with a greater transparency. Products for all years within the specified assessment range added to the Layers list, enabling inspection of results for both individual years and cumulative change.
Example of mapped results for a single year:
