I have a city map with digital boundaries. Each polygon has some numbers between 1 to 7. For example one of the polygon has 4,4,6,1,4,7,3,4,5,4,2 (the mode is 4 for this polygon). I wonder is there a way in Arcmap to find mode value for each polygon and make it colored by these number's value. (i.e. 1-yellow, 2- red, 3-green, etc..)?
This problem can be solved with the Spatial Join tool and setting the appropriate field mapping merge rule.
Below is a screen shot of the tool set up as it should be to return the MODE number.
As you can see you can return up to 11 statistics, mode being one of them.
So the logic is for each polygon, test for intersections with the join features (your points) and return the mode value and write that out to a new field (in my case called ID). The output is a copy of your polygon data with all the input fields, an intersection count and the chosen statistic (mode in this case).