You have sampling locations, and you would like to extract the values of several factors at those locations, such as, temperature, soil moisture, plant population and Nitrogen supply. Extract values from multiple rasters at point locationsĪssume, you want to learn the impact of corn production factors using regression. For example, if you need to attach the elevation values to the input feature class’s attribute table, just use Extract Multi Values to Points. Which one to use depends on what kind of output you need. You could use any of these three tools, since they all support single raster. Extract values from single raster at point locations exampleįor this case, the input would be a single elevation raster. Say you have some meteorological observation sites, and you would like to know the elevation of these locations. Extract values from single raster at point locations Currently, this is the only extraction tool that support multidimensional raster. For Sample, the raster values are stored at the field with the same name as the input raster, but you cannot specify the field name.However, you can specify the field name with this tool, if you wish. The raster values are stored in the field with the same name as the input raster. Extract Multi Values to Points, modifies the input feature by appending the raster values to the attribute table of the input feature. The raster values are stored in a predefined field called “RASTERVALU”. Even when you input a multiband raster, it will only process on the first band by default or the single band defined by you. Extract Values to Points only takes a single raster input. Apart from that, a few other things to keep in mind are: Tool Comparison Tableīased on the information from this table you can decide which tool to use. Let’s take these questions and have a look at how Extract Values to Points, Extract Multi Values to Points and Sample tools are different from each other. Do you want to extract exact values or interpolated (resampled) values from input raster or rasters?Īnswering such questions before hand will help you determine the best way to perform your analysis.Do you want to append all the input raster attributes to input feature class?.Do you want to append raster values to the input feature class or create a new feature class with the raster values?.If the input is a multiband raster, do you want to extract values from the first band or all bands?.Do you want to extract values from a single raster or multiple rasters?.Read on more to find out how to choose the right tool.īefore you start your analysis, let’s ask a few questions: However, because there are some similarities between them, you may be confused about which one to use. The Spatial Analyst extension offers several tools that can do this for you, those being Extract Values to Points, Extract Multi Values to Points and Sample. Many a times, in your analysis, you might need to extract values from rasters based on point locations.
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