![google nik collection how to change dpi google nik collection how to change dpi](http://www.personal-view.com/talks/uploads/FileUpload/3f/65d3e31a108f6b7dc6f80f73b7a6ea.jpg)
Briefly, GRIDMET blends PRISM and NLDAS to produce a daily, 4 km gridded climate dataset for the contiguous United States from 1979 - present. In this exercise, we will use the GRIDMET Meteorological Dataset to obtain precipitation. As described in the Introduction, GEE has co-located a number of datasets relevant to earth systems analyses.
#GOOGLE NIK COLLECTION HOW TO CHANGE DPI ARCHIVE#
GEE Data CatalogĪ secondary objective to this exercise is to use GEE to access common datasets stored in the data archive that may appeal to those not directly interested in remote sensing applications. Here, we will demonstrate a temporal reducer and a spatial reducer by obtaining data on annual precipitation by US county. We then take it a step further and use the spatial reducer ‘reduceRegions’ to calculate total annual precip for each US county. Here we follow the same workflow, but instead reduce using imageCollection.sum() to calculate total annual precipitation for each pixel in the US (temporal reducers). In Episode 3: Accessing Satellite Imagery, we used a vector boundary and date range to filter an image collection, mapped an algorithm (NDVI) over that collection, and then reduced that collection to one image in which each pixel value was its maximum NDVI.
![google nik collection how to change dpi google nik collection how to change dpi](https://www.onlineprinters.co.uk/magazine/wp-content/uploads/2018/06/8-nik-collection_Settings.jpg)
See the Reducer Overview in the Google Developer’s Guide for more information. Reductions can also occur in space, over bands within an image, or over the attributes of a FeatureCollection. Here’s a visual from Google demonstrating a reducer applied to an ImageCollection: They belong to the ee.Reducer class and include summary statistics, histograms, and linear regression, among others.
![google nik collection how to change dpi google nik collection how to change dpi](https://petapixel.com/assets/uploads/2017/12/mac-executable-800x358.jpg)
In Google Earth Engine (GEE), reducers are used to aggregate data over time, space, and other data structures.
#GOOGLE NIK COLLECTION HOW TO CHANGE DPI FULL#
Link to a static version of the full script used in this module: Use climate data products available through GEE Import vector data to summarize values by polygon regions Use reducers to aggregate a daily image collection to annual values