Why was the question and answer deleted for this?

https://www.mapleprimes.com/questions/229329-How-Can-We-Solve-Following-1D-Wave-Equation

Word-cloud is popular function which many languages have as add-on. Sometime called tag-cloud. https://en.wikipedia.org/wiki/Tag_cloud

"A tag cloud (word cloud or wordle or weighted list in visual design) is a novelty visual representation of text data"

I did help and did some google search, but can not find function in Maple. May be I did not search correctly.

In Mathematica is it called WordCloud. Here is an example of its use

WordCloud[Import["http://maplesoft.com"]]

And it returns this image back to the screen

Can one do the above in Maple? And what is the function name? Is it in special package?

Can one hope that next version of Maple will be able to solve the standard convection-diffusion pde in 1D?

pde:=diff(u(x,t),t)=d*diff(u(x,t),x$2)+c*diff(u(x,t),x);

in 1D. Even the most simple form with zero boundary conditions can't be solved.

pde:=diff(u(x,t),t)=d*diff(u(x,t),x$2)+c*diff(u(x,t),x);
bc:=u(0,t)=0,u(L,t)=0;
ic:=u(x,0)=f(x);
sol:=pdsolve([pde,ic,bc],u(x,t)) assuming d>0,c>0,L>0

              sol := NULL

I tried some HINT's also but not all of them.

FYI, Mathematica 12.1 is now able to solve the above PDE

ClearAll["Global`*"];
pde=D[u[x,t],t]==d*D[u[x,t],{x,2}]+c*D[u[x,t],x];
bc={u[0,t]==0,u[L,t]==0};
ic=u[x,0]==f[x];
DSolve[{pde,bc,ic},u[x,t],{x,t},Assumptions->{d>0,c>0,L>0}]

Gives

Is it possible I am overlooking some other option or a trick to obtain solution for the above using pdsolve? Only reason I am asking is that Maple can solve much more complicated PDE's and the above is one of the basic diffusion based PDE's. So I am surprised why Maple still can't solve this as it is just a seperation of variables method.

Maple 2020 on windows 10. Physics version 631

I am exploring the idea of porting some of my functions to Maple from Mathematica. But I just found a big problem in importing comma delimited data that contains a string within a string. This is not a problem being imported in Mathematica, but I need help to do same thing in Maple.

I tried ImportMatrix (as suggested in https://www.mapleprimes.com/questions/221509-How-To-Read-Lines-From-File-With-Quoted-Strings and also tried Import then convert and in both cases Maple does not read the full string in the field. I will show simple example

This file, called data.txt

1,2,3,"x+y, algorithm=["123"]","OK",5

It has 6 fields (since comma seperated.

But when importing it, Maple reads the 4th field above as "x+y, algorithm=[" and drops the rest 123"]"

Here is the code

#currentdir("C:\\bug"); #change as needed
data:=ImportMatrix("data.txt", source=csv);
print(data(4));
print(data(5));

This is the output

I also tried

data := Import("data.txt",format="CSV");
data := convert(data,Matrix):
print(data(4));
print(data(5));

Same output as above.

Compare the output in Mathematica. Using the same file as input. It automatically escapes the embedded strings and reads the full field OK

SetDirectory[NotebookDirectory[]];
data = First@Import["data.txt", "Table", "FieldSeparators" -> {","}, "Numeric" -> True]

               {1, 2, 3, "x+y, algorithm=[\"123\"]", "OK", 5}

data[[4]]

              "x+y, algorithm=[\"123\"]"

What would be the right way in Maple to import such files without losing part of the field?

The file has mixed strings and non strings, just like this example shows, and each file fields are seperated by comma, but I need to be able to read fields that can contain embedded strings in them automatically.

I am using Maple 2020. I think I might have to forget about import and try to do it using lower level code using scanf, or may be there is better method using Filetools package? but thought to check first if I am overlooking some option.

I depend alot on bracket matching to help me during writing code.

Maple suddenly losses bracket matching at some lines. I think it related to using strings with "\\" in them.

I make sure I have bracket matching on

I use worksheet mode (corrected), Maple 2020 under windows 10.

I made small video. Notice how the brackets do not match on the second line there.

Do you see how the brackets do not match on that second line there? This movie below shows what happens when I remove "\\string" from the line. Now bracket match starts to work again.

This is a serious problem for me. Any suggestions what to try to fix it and what can cause it?. Once bracket matching is lost, it is lost all the way to the rest of the code below the location where it started to lose first time.

restart;
if length(data_last(k,8))>300 then
   fprintf(file_id,"%s\n","\\footnotesize");
fi;

I think I have to find different editor to use and write the code to .mpl file since I have lots of such code and I need to have bracket matching working.