How to select a certain range in the middle of my data?

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I have a set of experimental data x,y. x goes between different values, and I want to remove a range of values inside (think x has values from 0 to 10 and I want to remove the range betweeen 5 and 6). How can I remove the values for both x and y data?
I am importing the data as follows:
RealData=Importdata('datafile.txt');
This gives me a matrix with x and y in two columns. The matrix will be different in different cases, so I want to be able to remove the data by giving the values of x between which I don't want the data, as the indexes will vary from case to case.
I have seen ways to remove data after a certain value, but not a range in the middle.

Accepted Answer

Star Strider
Star Strider on 5 Jul 2022
There are different ways to do this.
One approach —
ReadDataX = 0:0.5:10
ReadDataX = 1×21
0 0.5000 1.0000 1.5000 2.0000 2.5000 3.0000 3.5000 4.0000 4.5000 5.0000 5.5000 6.0000 6.5000 7.0000 7.5000 8.0000 8.5000 9.0000 9.5000 10.0000
ReadDataY = randi(9,size(ReadDataX))
ReadDataY = 1×21
7 7 6 6 7 8 6 6 8 6 1 5 3 5 4 2 2 4 7 7 8
Lv = ReadDataX<5 | ReadDataX>6;
NewDataX = ReadDataX(Lv)
NewDataX = 1×18
0 0.5000 1.0000 1.5000 2.0000 2.5000 3.0000 3.5000 4.0000 4.5000 6.5000 7.0000 7.5000 8.0000 8.5000 9.0000 9.5000 10.0000
NewDataY = ReadDataY(Lv)
NewDataY = 1×18
7 7 6 6 7 8 6 6 8 6 5 4 2 2 4 7 7 8
.

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