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Question
have I calculated 'scores' correctly for ROC curve input from PLS-DA
HI i've used plsregress() on some FTIR chemical spectrum data, to get a model which predicts a categorical variable (but becau...
plus de 6 ans il y a | 1 réponse | 0
0
réponsehow to find x from a fixed y, when using a sigmoidal fit
Oh yes I was being dim of course you just rearrage the formula to solve for x %-- rearrange the formula syms param1 param...
plus de 6 ans il y a | 0
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Question
how to find x from a fixed y, when using a sigmoidal fit
HI there sure this is super simple - but it's making my head hurt I have a sigmoidal fit - which finds y for any x But i wa...
plus de 6 ans il y a | 1 réponse | 0
1
réponseQuestion
what do lines that double back on themselves mean box plots
HI i'm using anova1 and it produces plots like this it's a dumb question: but what do the lines mean that double back on t...
plus de 6 ans il y a | 1 réponse | 2
1
réponseQuestion
multiply all numbers above a threshold in a matrix by n, but only on certain indices, and keep original matrix dimension
Hi, I want to multiply all numbers above a threshold in a matrix by n, but only on certain indices, and keep the original matr...
plus de 6 ans il y a | 1 réponse | 0
1
réponseQuestion
error in heat transfer example
Hi when working through the example https://uk.mathworks.com/help/pde/ug/heat-distribution-in-a-circular-cylindrical-rod.html ...
presque 7 ans il y a | 1 réponse | 0
1
réponseQuestion
cell2mat error in reading in e+ (scientific notation)
Hi i'm really puzzled as this bit of code has worked well in the past - but now does not work properly, as it no longer conve...
environ 7 ans il y a | 1 réponse | 0
0
réponseQuestion
how to create a volume using x,y,z co-ordinates for use in isosurface & isocaps function
Hi I have x,y,z co-ordinates - which you can visualise with " figure, stem3(xI, yI, zI, 'MarkerFaceColor', 'g'); " , if y...
plus de 7 ans il y a | 1 réponse | 0
1
réponseQuestion
plotting pixel values on a 256x256 image when only some pixel co-ordinates are known, and the unknowns can be 0 or NaN
I have the indices (x,y co-ordinates) and pixel values i want to visualise on a 256x256 image (i don't have all the pixel co-ord...
plus de 7 ans il y a | 1 réponse | 0
1
réponseQuestion
Error using cell2mat (line 52) CELL2MAT does not support cell arrays containing cell arrays or objects.
HI I have a cell array {4000x1 cell, 5000x1 cell} containing strings 'nameA', 'nameB' - I want to concatenate them into 1 long c...
presque 8 ans il y a | 1 réponse | 0
1
réponseQuestion
boxplot from a structured array
hi i have a structured array it's like this name_of_image(1).stats name_of_image(2).stats etc in .stats is a ...
plus de 8 ans il y a | 1 réponse | 0
1
réponseQuestion
plot middle and end of an array
HI i want of plot the beginning and end of an array, leaving out the middle bit something like . . . (here the comma doesn't ...
presque 9 ans il y a | 1 réponse | 0
1
réponseQuestion
showing K means clusters image in colors rather than grey scale
Hi I have clustered my image into 8 different clusters now I have got to this bit in the example on your web page <https...
environ 9 ans il y a | 1 réponse | 0
0
réponseQuestion
save('-append') does not work ; what am i doing wrong?
Hi I load in a .mat file into my script which contains a structure array of various variables - one of them the name of some...
environ 9 ans il y a | 1 réponse | 0
0
réponseQuestion
accessing double arrays in a multidimensional array
Hi I have an array which is 256x156x1056 double. (X,Y,Z [where the Z has it's own X,Y]) 1) How do you access the double? - ...
environ 9 ans il y a | 1 réponse | 0
1
réponseQuestion
sort X and Y columns according to a repeated string in a 3rd column and scatter plot
Hi, I have 3 columns (in a struct array called "data") columns are; "subject", "timepoint", "perimeter" . How can can I use som...
environ 9 ans il y a | 2 réponses | 0
2
réponsesQuestion
Create and save imfreehand() positions until the user clicks a button to finish
Hi, I want an image to open and the user to draw ROI with imfreehand() until they are finished - with the co-ordinates save...
environ 9 ans il y a | 1 réponse | 0
