Hi!
I have a population density raster that I have extracted into points created with Create Fishnet tool (Fig 1.) I have tried to interpolate the data to cover my whole study area but changing power or search radius doesn't change anything when I change the default output cell size (2560). The output rasters are identical no matter what kind of parameters I set (Fig 2.). Only if I change output cell size, I get something that looks a bit more like the result I am needing. Why doesn't the IDW tool work with any other cell size than set by default?
In addition, the output raster has a systematic structure with lower values after every 64 kilometers (those lighter dots in the Fig 3.) Why do I end up with those false values? I have checked the input data several times and there is no structure like that.
I am very grateful if someone could help me!
![another_student_0-1722325719291.png another_student_0-1722325719291.png](https://community.esri.com/t5/image/serverpage/image-id/111054iE5DEAFDC97488E6B/image-size/medium?v=v2&px=400)
Fig 1.
![another_student_1-1722325719314.png another_student_1-1722325719314.png](https://community.esri.com/t5/image/serverpage/image-id/111056i2F409E6C968B746E/image-size/medium?v=v2&px=400)
Fig 2.
![another_student_2-1722325719303.png another_student_2-1722325719303.png](https://community.esri.com/t5/image/serverpage/image-id/111055i33977B667D6B8394/image-size/medium?v=v2&px=400)
Fig 3.