check for decrease and increase

i have a matrix and check for a column to see if the values are rapidly decreasing in steps of five. how to check for it? for example the matrix is x and the second column.

Answer 1

[KSSV]

Read about diff. This will get the difference of successive rows. If decreasing diff would be negative, if increasing diff will be positive.

Answer 2

[madhan ravi]

x=[100:-5:0] %an example
issorted(x,'strictdescend')  %to check if they are sorted
abs(diff(x))==5

Answer 3

[Image Analyst]

Try the function findchangepts(), in versions of MATLAB r2016a and later.

Answer 4

[Palnati saidatta]

x=[100:-5:0] %an example

issorted(x,'strictdescend') %to check if they are sorted

abs(diff(x))==5

[Image Analyst]

@Palnati saidatta, isn't this just the same answer as @madhan ravi?