Le forum de XCAS

Publié : **lun. mars 12, 2018 11:09 pm**

Hello BP
I do not see the 2D print, Why?

f():={
  print(sqrt(2));
  printf(sqrt(2));
  return "Done";
}:;

Publié : **mar. mars 13, 2018 11:59 am**

2d printing is visible in the console (at the bottom) in Xcas for Firefox and in DispG() screen in Xcas native.

Publié : **mar. mars 13, 2018 3:26 pm**

Some suggestions for DispG window:

1: On the first print delete the message "Step by step console"
2: Allow the ClrIO command to clean the print history
3: the impression of the last line must move the previous ones, so that it can be visualized in real time

Thanks

Publié : **mar. mars 13, 2018 4:19 pm**

Ok for supporting ClrIO, but I won't change anything else in DispG in Xcas native.

Publié : **mar. mars 13, 2018 8:20 pm**

thanks, with the ClrIO command, the screen is automatically cleaned

There is a simple problem, the printing is superimposed (you have to increase the line spacing =) ), please try the following code,

sol_sys1():={
local y,x,list0,expr0,lsolx,y1,y2,sols,test1;
purge(x,y);
autosimplify(nop); autosimplify();
approx_mode(0); approx_mode();
DispG; ClrIO; printf("Solving a system of two equations"); printf("Solve the following system:");
list0 := [ y = x^2, y = 2*x + 3 ]; printf(list0);
printf("substitute y = x² in y = 2x + 3:");
expr0 := subst(list0(2),list0(1)); printf(expr0);
printf("substract 2x + 3:");
expr0 := expr0-(2*x + 3); printf(expr0);
printf("simplify:");
expr0 := simplify(expr0); printf(expr0);
printf("factor:");
expr0 := factor(expr0); printf(expr0);
printf("zero factor theorem:");
lsolx := [ part(left(expr0),1)=0, part(left(expr0),2)=0 ]; printf(lsolx);
printf("First factor plus 3, second minus 1:");
lsolx := [lsolx(1)+3, lsolx(2)-1 ]; printf(eval(lsolx,1));
printf("simplify"); printf("x values:");
lsolx := simplify(lsolx); printf(lsolx);
printf("y values:"); printf("Replace x values in the system, firts equation");
y1 := subst(list0(1),lsolx(1)); printf(y1);
printf("Replace x values in the system, second equation");
y2 := subst(list0(1),lsolx(2)); printf(y2);
printf("Solutions shaped as a array");
sols:=[[lsolx(1),y1],[lsolx(2),y2]]; printf(sols);
printf("Checking results:"); printf("Replace x and y values in the system, firts equation");
test1 := subst(list0(1),[sols(1,1),sols(1,2)]); printf(test1);
printf("Evaluate:");
test1 := evalb(test1); printf(test1);
printf("Replace x and y values in the system, second equation");
test1 := subst(list0(1),[sols(2,1),sols(2,2)]); printf(test1);
printf("Evaluate:");
test1 := evalb(test1); printf(test1);
sols := solve([ y = x^2, y = 2*x + 3 ],[x,y]); printf("Solutions:"); printf(sols);
printf("Solutions shaped as a boolean expression:");
sols := list2exp(sols,[x,y]); printf(eval(sols,1));
printf("Graphing");
plot([x^2,2*x+3],x);
return("Done");
}:;

I think that to take better advantage of the console space, please align to the left

Thank you very much

Publié : **mar. mars 13, 2018 8:56 pm**

Run it inside Xcas for Firefox. As I said, I won't make UI changes in Xcas native. The future of Xcas native is for intensive computations where Xcas for Firefox would be too slow.

Publié : **ven. mars 23, 2018 10:03 pm**

Hello BP, the future of the app are online app, but on-line_xcas is in development, while the PC version, usually works well and is already "ready"

I think it will not change anything in the UI, at least correct BUGS in the same

when running the next program, the super indexes are superimposed, the bug is solved simply by increasing the line spacing, maybe the something simple on source-code, or maybe this involves modifying 100s the code lines.

Code : Tout sélectionner

sol_sys1():={
local y,x,list0,expr0,lsolx,y1,y2,sols,test1;
purge(x,y);
autosimplify(nop); autosimplify();
approx_mode(0); approx_mode();
DispG; ClrIO; printf("Solving a system of two equations"); printf("Solve the following system:");
list0 := [ y = x^2, y = 2*x + 3 ]; printf(list0);
printf("substitute y = x² in y = 2x + 3:");
expr0 := subst(list0(2),list0(1)); printf(expr0);
printf("substract 2x + 3:");
expr0 := expr0-(2*x + 3); printf(expr0);
printf("simplify:");
expr0 := simplify(expr0); printf(expr0);
printf("factor:"); 
expr0 := factor(expr0); printf(expr0);
printf("zero factor theorem:"); 
lsolx := [ part(left(expr0),1)=0, part(left(expr0),2)=0 ]; printf(lsolx);
printf("First factor plus 3, second minus 1:");
lsolx := [lsolx(1)+3, lsolx(2)-1 ]; printf(eval(lsolx,1));
printf("simplify"); printf("x values:");
lsolx := simplify(lsolx); printf(lsolx);
printf("y values:"); printf("Replace x values in the system, firts equation"); 
y1 := subst(list0(1),lsolx(1)); printf(y1);
printf("Replace x values in the system, second equation");
y2 := subst(list0(1),lsolx(2)); printf(y2);
printf("Solutions shaped as a array");
sols:=[[lsolx(1),y1],[lsolx(2),y2]]; printf(sols); 
printf("Checking results:"); printf("Replace x and y values in the system, firts equation"); 
test1 := subst(list0(1),[sols(1,1),sols(1,2)]); printf(test1);
printf("Evaluate:");
test1 := evalb(test1); printf(test1);
printf("Replace x and y values in the system, second equation"); 
test1 := subst(list0(1),[sols(2,1),sols(2,2)]); printf(test1); 
printf("Evaluate:");
test1 := evalb(test1); printf(test1);
sols := solve([ y = x^2, y = 2*x + 3 ],[x,y]); printf("Solutions:"); printf(sols);
printf("Solutions shaped as a boolean expression:");
sols := list2exp(sols,[x,y]); printf(eval(sols,1));
printf("Graphing"); 
plot([x^2,2*x+3],x); 
//DispHome
return("Done"); 
}:;

Publié : **dim. mars 25, 2018 7:55 pm**

Unfortunately, the widget used for the step by step console is the same as for displaying matrices, changing anything there would certainly have bad side effects.

Publié : **sam. avr. 14, 2018 3:48 pm**

An idea, to avoid the superposition of lines automatically print a blank line after each impression.

printf("");

Publié : **sam. avr. 21, 2018 3:43 pm**

parisse a écrit :Ok for supporting ClrIO

ClrIO is not working

Code : Tout sélectionner

printf(x^2);printf(x/y);Pause;ClrIO;

xcas has commands similar to ClrHome (ClrWorkSheet)? http://tibasicdev.wikidot.com/68k:clrdraw

Publié : **sam. avr. 21, 2018 4:25 pm**

It works on linux with 1.4.9-59, maybe binaries are not updated for win and mac.

Publié : **sam. avr. 21, 2018 4:42 pm**

the last windows version throws giac 1.4.9-57.

It is possible that the graph DispG; plot(x-1/6*x^3,x); is only drawn in the DispG window and not in the worksheet?, since it does not make sense to see the graph in two parts,DispG window and worksheet window.

Publié : **sam. avr. 21, 2018 5:30 pm**

No. The worksheet should be the place where all happens, you should not use DispG, it's here only for compatibility.

Publié : **sam. avr. 21, 2018 5:42 pm**

^
you believe that a clrHome command is important to clean the worksheet?

Publié : **sam. avr. 21, 2018 6:27 pm**

What do you mean by clearing the worksheet?

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