I cant see to put converge (/) inside the function:
i:0
arg:0
{x+:1;i+:1}/[{i~0};0]
i ' Leads to answer 1
Works where i comes out to 1. The following segment will return an error:
depp:{[arg] i:0; {x+:1;i+:1}/[{i~0};0]; :i}
depp[0] ' Cant recognize i
Why?
you will either have to pass i to the lambdainside the function depp or use global assignment for i i.e
depp:{[arg] i::0; {x+:1;i+:1}/[{i~0};0]; :i}
Related
I have a custom function I have made, which requires two input arguments. This is the opening line of the function, clearly showing it needs just two input arugments:
function [file,frame,vertices,edges,faces,faceOrders,edgeOrders] = FOLD_reader(filename,rundocfolder)
The FOLD_reader function is called within another function (FEAfromFOLDVaryingStiffness), using the following line of code:
[~,frame,vertices,~,faces,~,~] = FOLD_reader(filename,rundocfolder);
To which matlab claims:
Not enough input arguments.
Error in FEAfromFOLDVaryingStiffness (line 12)
[~,frame,vertices,~,faces,~,~] = FOLD_reader(filename,rundocfolder);"
However, if I copy and paste the offending line into the command window, it works perfectly. The filename and rundocfolder variables are definitely defined in FEAFromFoldVaryingStiffness which calls FOLD_reader, as they are among the input arguments of the FEAFromFold(etc) function itself.
Has anyone had any experience with this seemingly bizzarre error? To me it makes no sense at all.
If it's a help here are the lines up to the error point inside FEAfromFOLDVaryingStiffness:
function [] = FEAfromFOLDVaryingStiffness(filename,meshsize,displacement,m,n,stiffnessvary,rundocfolder)
%Comments ommitted for brevity
[~,frame,vertices,~,faces,~,~] = FOLD_reader(filename,rundocfolder);
I'm an idiot, I called the FEAfromFOLDVaryingStiffness with one too few arguments, I'd left out m or n or something and so the last input variable (rundocfolder) was undefined, which showed up as an error with fold_reader inside the FEAfromFOLDVaryingStiffness function, instead of where the error actually was: the top level script.
I have a code in matlab (~1000 lines) that constists of about 15 functions. The code runs fine with each function as a different script, but I want to put them all into one file so I can use the publish function more easily. However, when I put them all together my 'main' function isn't recognizing the local functions. Here's what it looks like:
function full_function()
...
values = fvalues(0);
...
end
function values = fvalues(state)
...
end
When I try to run it, it gives me
"Undefined function 'fvalues' for input arguments
of type 'double'.
Error in full_function (line 32)
values = fvalues(0);"
I've looked all over for how to do local functions and I have no idea what I'm doing wrong. If I right-click on fvalues and hit 'open' it even brings me to the correct portion of the code, so I have no idea why full_function cannot read it. Please help! Thanks.
I wrote code similar to that posted by FeliceM, but when I tried to include the recommended changes/additions I got the following error:
Warning: File: odd_index.m Line: 5 Column: 18
Function with duplicate name "odd_index" cannot be called.
Here's my code:
function odd_index
M=[1:5; 6:10; 11:15; 16:20; 21:25];
M=M(1:2:end, 1:2:end);
end
function M_out = odd_index(M)
M_out = M(1:2:end, 1:2:end);
end
Not quite sure what I'm doing wrong.
It appears to be simply a problem of naming your two functions the same name. Rename the second function (and make sure it's in a separate file with the same name as itself). Really, the first one isn't a function at all, but appears to be a script.
You may want to refer to the MATLAB Getting Started help documentation for more information on functions and scripts. http://www.mathworks.com/help/matlab/getting-started-with-matlab.html
I want to preserve the value of variable q in the below mentioned code when it makes a call to the funtion gm.
demo.m is:
for q=1:Nqueries
disp(['Matching query ' db.queries{q}]);
qPath=[db.folder '/' db.fqueryFolder '/' db.queries{q} '_' featMethod '_' num2str(PeakThreshold) '.mat'];
fq=load(qPath);
query_path=[db.folder '/' db.queryFolder '/' db.queries{q} '.jpg'];
matches=cell(1,Nrefs);
fr=cell(1,Nrefs);
ref_paths=cell(1,Nrefs);
for r=1:Nrefs
rPath=[db.folder '/' db.frefFolder '/' db.references{r} '_' featMethod '_' num2str(PeakThreshold) '.mat'];
ref_paths{r}=[db.folder '/' db.refFolder '/' db.references{r} '.jpg'];
fr{r}=load(rPath);
%Matching things
[idx, dists] = vl_ubcmatch(fq.d,fr{r}.d,thRatio);
matches{r}.idx=idx;
matches{r}.dists=dists;
end
%We run the Generative Model
sim(q,:)=gm(query_path,ref_paths,fq,fr,matches,K);
end
and this code generates following error:
Matching query 1
??? Undefined function or variable 'q'.
Error in ==> gm at 86
Iq=imread(sprintf('db/queries/%d.jpg',q));
Error in ==> demo at 65
sim(q,:)=gm(query_path,ref_paths,fq,fr,matches,K);
The gm function uses q as follows:
Iq=imread(sprintf('db/queries/%d.jpg',q));
Adding more variables to the function call is the cleanest way of resolving this issue, of course. But if modifying the called function is too painful, e.g. because you'd have to change many functions until you reach the one where you want to use your variable, you might want to consider making this variable a global variable:
global YOURVARIABLE %choose a good name here to avoid
%overwriting existing global variables
YOURVARIABLE can now be accessed from any other function's workspace although you have to declare this in each function separately, see:
Declaring a global variable in MATLAB
Also, you should be very careful when using them:
http://www.mathworks.com/help/matlab/matlab_prog/share-data-between-workspaces.html
As described in the documentation global variables are risky because they have their own workspace that can be edited from anywhere, so if the same variable is used by several functions you might get unexpected results. Therefore, they should only be used when really necessary.
I modified the code in the for loop to
sim(q,:)=gm(query_path,ref_paths,fq,fr,matches,K,q);
and the definition of the called function gm as
gm(query_path,ref_paths,fq,fr,matches,K,q);
I have written a macro for ImageJ/FIJI to deconvolve my confocal microscopy images and run the "3D Object Counter" plugin. The macro successfully runs all required commands and saves all required data in the specified places.
However, I have found that the 3D-OC autothreshold (as shown in the plugin dialog box) is to stringent resulting in objects being lost or divided.
To remedy this I would like to reduce the autothreshold by a predetermined function something similar to what was done here (from:How to get threshold value used by auto threshold Plugin) which resulted in this code:
setAutoThreshold();
getThreshold(lower,upper);
v=setThreshold(lower,upper*0.5);
run("3D Objects Counter", "threshold="v" slice=10 min.=400 max.=20971520 objects statistics summary");
The idea was to call the AutoThreshold values, modify them and set them to a variable. However when these lines are run the following error is returned:
Number or numeric function expected in line 3.
v=<setThreshold>(lower,upper*0.5);
And if the variable is inserted directly into the threshold key for run(3D-OC) the following msg is encountered:
Numeric value expected in run() function
Key:"threshold"
Value or variable name:"setThreshold(lower,upper*0.5"
Any suggestions or help on how to designate the 3D-OC threshold value as a variable as described would be greatly appreciated (as would any work arounds of course :) ).
Cheers
Edit: After testing Jan's response below (which works perfectly), it appears I need to call the threshold set by the 3D-OC plugin. Anyone know how to do this?
The getThreshold(lower, upper) function returns the lower and upper threshold levels in the provided variables. There is no need to assign any value to a new variable, and as you observed, setThreshold does not have any return value.
Instead, you can use the value(s) returned from getThreshold and use them as parameters in the run method (in the correct way, by string concatenation, see here):
setAutoThreshold();
getThreshold(lower, v);
run("3D Objects Counter", "threshold=" + v + " slice=10 min.=400 max.=20971520 objects statistics summary");
Alternatively, you can use &v in the second parameter to avoid string concatenation in the last line (see the documentation for the run() macro function):
run("3D Objects Counter", "threshold=&v slice=10 min.=400 max.=20971520 objects statistics summary");
You might have to use the lower instead of the upper threshold value, depending on whether you count bright or dark objects.