Receiving an interpolate error.

Trying to normalise my data to 101 points but receiving the error: Error using griddedInterpolant Interpolation requires at least two sample points in each dimension.

Error in interp1 (line 186) F = griddedInterpolant(X,V,method); Using the code: Number_of_Steps = length(Touch_Down);

for i=1:Number_of_Steps data=mm3(Touch_Down(i,1):Toe_Off(i,1),2); %data is used from one starting point to the next starting point filt_pressure(:,i)=interp1(1 : length(data) , data , linspace(1, length(data),100)); %interp1(original structure, values , new structure end;

When running the code it interpolates a few columns of data for the filt_pressure but does not interpolate every single one of them and I'm not sure why.

Any help is much appreciated.

Answer 1

[John D'Errico]

READ THE ERRORR MESSAGE! LOOK AT YOUR DATA!

[Touch_Down,Toe_Off]
ans =
       218         225
       245         253
       272         280
       285         285
       287         287
       299         307
       326         334
       339         342
       353         361
       380         388
       407         414
       418         418
       434         441
       444         452
       461         469
       472         475
       489         496
       502         503
       516         524
       543         550
       569         577
       597         604
       623         631
       651         659
       678         686
       705         714
       733         741
       760         769
       788         796
       815         823
       842         850
       869         877
       896         904
       924         931
       950         958
       977         985
      1004        1012
      1031        1040
      1059        1067
      1086        1094
      1113        1121
      1139        1147
      1165        1174
      1193        1201
      1221        1229
      1249        1257
      1276        1284

You have this:

data=mm3(Touch_Down(i,1):Toe_Off(i,1),2);

How long is the vector:

Touch_Down(i,1):Toe_Off(i,1)

when i == 4, or 5, or 6? In those cases, what is length(data)?

Now go back and re-read the error message.