I have run the following interpolation routine of PM values using a number of co

Question

I have run the following interpolation routine of PM values using a number of control points. You can see some of the control points on the map. numbered 1 through 5. as well as nearby cities, shown in black squares. Which of the following statements is true about the image? Site #1 has a high value because it is dose to a city and it is very far from other control points. When running any interpolation routine, the value tor Durham (black square furthest to the right) will be relatively close to the value for Control Pont #3 regardless of tie interpolation routine that is used. Site # 2 has a low value because it is very far from other control points. When running all interpolation routines, the value for Durham (black square furthest to the right) will have have the highest range between the various types of routines because of the way each of the interpolation routines creates values. When you create a density map. which of the following is not a parameter that you can change? seareh radius type of seareh neighborhood output ceil size power When you run a spatial interpolation routine using default settings. the extent of your interpolated surfaces will be to the extent of your control points What environmental setting(s) must you change n order to find all cells within your study area (state, for example). processing extent and cel size mask and processing extent type of seareh neighborhood z-values and processing extent

Explanation / Answer

4. Interpolation is calculating the unknown value or missing value between two known values in a sequence. Here when the interpolation routine is used, the value of the square will be relatively closer to the control point 3 irrespective of the interpolation routine used because of their nearness to each other.

5. When using density map all other parameters like search radius, type of search neighbourhood, output cell size can be changed except power.

6. While running a spatial interpolation using the default settings, we will click on processing extent and cell size so to change the environmental settings so that we can find all cells withing the study area.

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