Reverse calculate a table of values
10 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Ferd
am 17 Jan. 2020
Kommentiert: Star Strider
am 20 Jan. 2020
Hi,
I'm looking for a way to determine the Y axis from a given Z value in a 3D table. Basically reverse interpolate the table.
Is there a way to determine it?
X/Y 0 100 175 250 325 400 475 575
60 0 5 13 21 29 40 51 68
80 0 7 16 24 32 40 49 63
90 0 7 16 25 34 42 49 61
100 0 6 15 25 33 41 49 59
110 0 6 15 23 32 40 48 58
120 0 5 14 22 30 38 47 57
130 0 5 13 21 29 37 45 56
140 0 5 13 21 29 37 44 55
150 0 4 12 21 29 37 44 54
160 0 3 12 20 29 37 44 53
Say, Z = 45, X = 125, Y = ?
Thanks in advance!
0 Kommentare
Akzeptierte Antwort
Star Strider
am 17 Jan. 2020
I am not certain what a ‘3D table’ is. Perhaps you intend a three column table or array.
The code for that, assuming ‘Y’ and ‘Z’ are vectors, would be:
Yi - interp1(Z, Y, Zi);
and ‘Zi’ is the scalar or vector you want to find the ‘Yi’ values for.
4 Kommentare
Weitere Antworten (1)
Image Analyst
am 17 Jan. 2020
Bearbeitet: Image Analyst
am 17 Jan. 2020
If the desired Z value is definitely in your Z matrix, then you can find them by
zMap = Z == desiredZValue; % Produces a logical matrix where it's 1 if the matrix has that Z value.
% To get the rows and columns of all the locations, do this:
[Y, X] = find(zMap);
Siehe auch
Kategorien
Mehr zu Logical finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!