Fixing "Keyword parameters not allowed" Error in IDL Function

[big man]

Homework Statement

I've created a function inside IDL and I want to be able to specify the binsize.
That is, I want to have:

result = myfunction(array, keyword)

Whenever I add the keyword in the brackets there it says:

"Keyword parameters not allowed in call."


2. Relevant code

FUNCTION histimage, array, binsize=x

If KEYWORD_SET(x) then $

count = uintarr(256/x)
array = array*(1/x)
array=round(array)

*end if else begin
count = uintarr(256)

for j = 0,255 do begin
for k = 0,255 do begin
count(array(j,K)) = count(array(j,k)) + 1
endfor
endfor

Return, count

END

Histimage is the name of my function and binsize is the keyword. The point in the code where there is a * shows where I get a compile error as well. I can't see why I get this error and was hoping that someone could tell me if I've used incorrect syntax.

 

[b.white]

Hi, hope this isn't too late to be of help, I stumbled across this looking for help on keyword syntax.

In IDL I think you need:

if keyword_set(x) then blah
if not keyword_set(x) then bleh

I think that's why you're getting a compile error at "endif else begin", as it's not the correct syntax for the keyword_set function.

 

[piercas]

it is important to carefully check syntax and understand error messages in order to effectively troubleshoot and debug code. In this case, the error message "Keyword parameters not allowed in call" indicates that the use of a keyword in the function call is not allowed. This could be due to a few reasons, such as incorrect syntax or the keyword not being defined in the function.

In order to fix this error, it is important to double check the syntax of the function and ensure that the keyword is properly defined within the function itself. Additionally, it may be helpful to consult the IDL documentation or seek assistance from other experienced programmers to troubleshoot the issue. With careful attention to detail and a thorough understanding of the code, the "Keyword parameters not allowed" error can be resolved and the desired functionality can be achieved.