Esri time cube pro and contra4/12/2023 ![]() See Learn more about how the Create Space Time Cube works for details on how default time-step intervals are computed. If you do not provide a Time Step Interval value, the tool will calculate one for you. Time-step intervals are always fixed durations, and the tool requires a minimum of ten time steps. You might decide to aggregate points using one-day, one-week, or one-year intervals, for example. The Time Step Interval defines how you want to partition your aggregated points across time. This field should contain the timestamp associated with each point feature. Select a field of type Date for the Time Field parameter. See Visualizing the Space Time Cube to get strategies allowing you to look at cube contents. The netCDF file created may be used as input to the Emerging Hot Spot Analysis tool. Output from this tool is a netCDF representation of your input points as well as messages summarizing cube characteristics written to the Results window. This tool requires projected data to accurately measure distances. The tool will fail if the parameters specified result in a cube with more than two billion bins. ![]() The tool requires a minimum of 60 points and a variety of timestamps. ![]() The field containing the event timestamp must be of type Date. Each point should have a date associated with it. The Input Features should be points representing event data, such as crime or fire events, disease incidents, or traffic accidents. For many analyses, only locations with data-with at least one point count greater than 1 for at least one time step-will be included in the analysis. Because the cube is always rectangular even if your point data is not, some locations will have point counts of zero for all time steps. Bins encompassing the same duration share the same time-step ID. Bins covering the same (x, y) area share the same location ID. The data structure it creates may be thought of as a three-dimensional cube made up of space-time bins with the x and y dimensions representing space and the t dimension representing time.Įvery bin has a fixed position in space (x,y) and in time (t). This tool aggregates your point Input Features into space-time bins. Learn more about how the Create Space Time Cube works Illustration Usage For all bin locations, the trend for counts over time are evaluated. Self._createLocationVariable(lat, 'latitude', latValues)įile "c:\program files\arcgis\pro\Resources\ArcToolbox\Scripts\SSCube.py", line 626, in _createLocationVariableįile "netCDF4\_netCDF4.pyx", line 4992, in netCDF4._netCDF4.Variable._setitem_įile "netCDF4\_netCDF4.pyx", line 5271, in netCDF4._netCDF4.Variable._putįile "netCDF4\_netCDF4.pyx", line 1928, in netCDF4._netCDF4._ensure_nc_successįailed to execute (CreateSpaceTimeCubeMDRasterLayer).Summarizes a set of points into a netCDF data structure by aggregating them into space-time bins. The tool fails and I got this message: Traceback (most recent call last):įile "c:\program files\arcgis\pro\Resources\ArcToolbox\Scripts\SSCube.py", line 92, in _init_įile "c:\program files\arcgis\pro\Resources\ArcToolbox\Scripts\SSCube.py", line 168, in _initializeįile "c:\program files\arcgis\pro\Resources\ArcToolbox\Scripts\SSCube.py", line 540, in _createDimensions crf format meeting the conditions required including 10 time steps. I ran from the geoprocessing pane, I used the default settings with view to adjust after the first successful run. I run the Create Space Time Cube from Multidimensional Raster tool in ArcGIS Pro 2.7.3. ![]() I have created a multidimensional raster of years from 2001-2020 of forest loss cells. I am creating a space-time cube from global forest watch forest loss data. ![]()
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