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Hello,

       I have a huge sparse matrix (1.5e6 x 1.5e6) of both symbolic or non-symbolic form. When I export matrix using ExportMatrix command, it is not writing the matrix in order of rows and columns. To further explain the problem,

          Let A be that huge sparse matrix. I am using

                    ExportMatrix("matrix.mtx",A,format=MatrixMarket)

We expect the output to be,

 1 1 0.1

 1 10 0.65

.

.

.

But it is writing the output as

 

100 1 0.25

100 25 0.65

Hence it is not writing in order. What is the way we can force it to write in order? I do understand using for loop will consume more time.

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Hi

Is there a way of importing data in NetCDF format into Maple 15? This format is very widely used in atmospheric sciences as a data standard for experimental data such as satellite-derived data.

Thanks

Hello,

 

I am working on a project where Maple's output is fed to another software which requires all it's input in specific format. So, I want to print this expression,say

y=+2.*x+.2, in this software, but it takes input as

y=2*x+0.2, So now I have to change

+2. to 2.0 or 2 (if it's starting of the equation)

-2. to -2.0

.2 to 0.2

 

Is there any way to convert all the numbers in the equation to...

Hello,

 

I am working on a Maple project and it require me to pass a differential equation in a specific order like

x'=y & y'=x^2.(It is differentaiting w.r.t 't'(say))

However when I convert the equation into string it converts something as

diff(x(t),t)=y(t) & diff(y(t),t)=x(t)^2

 

Is there any way to stop maple from evaluating into maple/math format?

Is there any way to pass an equation without changing it's existing form?...

Hey guys.

 

I've been using a format where everything, math and text, is in black. The awnsers come out in blue.

Some coleges use a (ugly?) format where the equations are in red and are, in my opinion, less easy to read and take longer to type down.

 

So my question is simply this: Can I do everything using the black format I'm used to, or are there certain things that I MUST use the red format to compute?

If there are...

Hello every one,

I am using similarity transformation to transform a PDE into an ODE.

I got the ode but its in a very ambiguous (unclear) form.

I need help to have the ode in a more friendly reading format.

Thanks

pdetoodest.mw

hello,

after defining N_1 N_2 and N_3 with long numbers, and defining M by N_1*N_2*N_3 i tried to step backwards.

By entering something like: M/N_1 (what is exactly like N_2*N_3) it does not show me full numbers, but instead 1/something*M.

After refreshing M and afterwards refreshing M/N_1 it totally worked out and showed me the product of N_2*N_3

Now my question is: how can i prevent this odd display format without refreshing everytime? (i tried...

hi

when i copy my results in excell or notepad, they are in the following format

                   HFloat(-2.372591966940632)
          ...

Dear All,

Further to my previous question on this forum "How to write data from a matrix while choosing the format?", I would like to update it by adding a complex number. What is the easiest way to deal with that?

Here is the file (that does not compile): writedataMatrix.mw

> driver := proc () local A, B, x, f, g, i, j, format, fd:

A := Matrix(3, 3):
f := 1-2*I:
g := evalf(sin((1/5)*Pi)):

Dear All,

I would like to know the easiest way to write data, that are stored in a matrix after a computation, to a file with a specific format. To be more precise, I wish to have the possibility to change the format for a given column.

Here is a trial (output is wrote to the terminal for simplification) based on some examples I found, but without success.

WritedataMatrix.mw

Hi all!

Please I'm having difficulties in specifying a repeat count for my format descriptor in Maple. For example,
If I want to repeat the format descriptor "%-+8.4f" ten times, is it compulsary that I write it explicitly as shown below?

fprintf(file, "\n%-+8.4f%-+8.4f%-+8.4f%-+8.4f%-+8.4f%-+8.4f%-+8.4f%-+8.4f%-+8.4f%-+8.4f",e[5],mp[5],zp[5],mt[5],zt[5],roc[5],ac[5],pnloc[5],fs[5],qcode[5]):

I know in Fortran, a descriptor such as "10F8.4" is possible....


every time I enter / or ^, maple automatically changed the text I entered into fraction or power, and I am having hard time enter equations normally like the way I do in graphic calculator or matlab. I am forced to type all my equations on a text pad and then copy over.

is there a way to stop maple from auto formatting my input text? I am more of a matlab guy and I really need to use symbolics and integration abilities right now, but this version of maple is making...

I would like to see the contents of a .m file into a human readable form.  How do I do that?

From http://www.maplesoft.com/view.aspx?SF=87640/0 \ Simple_Harmonic_Moti.mws
In several attempts I have downloaded the maple worksheet Simple_Harmonic_Moti.mws.
When I try to open I get the following message:

link imagen

How to proceed to execute the worksheet?

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