@mapleatha ok no problem.  Just wanted to make sure you were able to get it to work on Maple 13.  On my M13 op(2,f)*``op(1,f) works.  

Not sure if this will work for you but moving `` in front of everything works as well  ``op(2,f)*op(1,f)

@mapleatha You forgot `` in front of the second op.  Put `` in front of the second op and it will work in Maple 13

@mapleatha .. no you don't need a special package.  Different versions of Maple sometimes do slightly different things with the same operations (ie order and sorting) sometimes it's not cut and dry to try to manipulate Maples output to the way you want. 

I used Maple 2017 when I came up with my answer above.  Just tried it on M12, unfortunately my solution above leaves it in the expanded form. 

To me it seemed they could be used interchangebly.  More of an unsure query than a statement.  I wasn't too sure but I think a viable answer, no?

..or symbol.  Funny I've always used symbol, but seems name and symbol can be used interchangeably. 

It is done here in mathematica

https://mathematica.stackexchange.com/questions/9327/is-it-possible-to-produce-anaglyphs-with-mathematica

Yes, I recall _Maxim_ wrapping call suggestion.  Although, I think if a large error is going to pop up, an internal routine (like the try catch) should take over and display only the first bits (maybe 10 lines - maybe that's too much) of information and terminate the rest as a returned display.

@Thomas Dean you could try a semilogplot

I am not sure what application was mentioned that brought you here but perhaps it was this MapleV application which can be found in the app center here https://www.maplesoft.com/applications/view.aspx?SID=3743  Bode and root locus plots

whoa!  Didn't realize he was answered in 2008.

Thanks Kitonum and Carl for some answers.

I thought also one could use ListTools:-Occurences. 

I thought there was a way to do this without the use of any packages. 

@NorwegianStudent I had to convert to jpg since I was using Maple 18 but try this for the mask.

I've had excellent luck with _Maxim_'s code.  Multiple thanks again _Maxim_ for your code.  I've just expanded on the piecewise part to create multiple circled out areas using "or" and I also, luckily, haven't had any problems with freezing up. 

However I've only manually adjusted by trial and error to mask the proper areas.  It's a bit of grunt work, I actually didn't pay attention to the importance of the PlotHistogram as a tip for helping until I read the above again. 

Is there an index that takes into account proper spacing and capitization? 

aside, it's possible these spams were generated by bots.

**edit added** Basically if many errors are present the normal readability index's SMOG etc.. should be penalized points and be put into a worse situation.  In other words the poorly written spam document shouldn't deserve to get even close to any well written documents. 

** Statistics to a written document could be added, regarding the spacing and capitalizations, to determine wether it is very poorly written or just merely an odd typing mistake.  Based on that it we could classify it as most likely a legitimate document or not likely a legitimate document. 

@ahmer Lamp package is the package you need to run those commands, you mentioned you already have it.  Go to the site I directed you to earlier and it will tell you where to place the files from the lamp package so you can use it. 

If you've placed the lamp package in the location mentioned in the link then using with(Lamp) will allow the use of the package.  However it sounds like you have not run libname:=libname, "location of lamp package"

Did you run with(Lamp) ?  And what errors did you get when you ran that line? 

**edit add** ok yes I see you have indeed not loaded the lamp package properly.  You need to run the libname:=libname,"location of lamp package" first .  It actually mentions the error you see on the link I gave you and why it shows up and how to rectify it.  You should read it.

And no, the functions you want to run do not exist in any built in maple package which is why they are not defined. 

@ahmer If you have the LAMP package then I suggest going here if you are having problems installing it

http://mathsci2.appstate.edu/~sjg/class/2240/libname.html

Something to note.  The LAMP package was designed for Maple 6.  Most commands in the package likely will not work properly with Maple 15.  Most of the funtionality of the LAMP package is most likely built in to maple using other commands.  Is there a specific worksheet you are following?

@Preben Alsholm so far I have found this