Use the systems of equations icon in Functions to get multiple curves on a plot

Hello mar,

Chosee "Scaling" from the palete. Then, with the scroll mouse wheel you can scale both axis (with the left button you can move). Pressing CTRL or SHIFT you will scale x or y axis separately with the scroll mouse wheel. The 2D and 3D manipulation and configuration will be improved sooner or later.

Regards,
Radovan

Edited by user 13 September 2009 21:07:06(UTC)  | Reason: Not specified

That is, actually, a problem. By choosing "Scale" from the "Plot" pallete you can replace mouse wheel by pressing left mouse button and moving at the same time. This will rescale both x an y axis at the same time. Separate scaling is not possible without mouse wheel (I think). This is introduced in the recent version. You can try to use some scale factor (multiply or devide with same constant) for the axis you are interested in, in order to see the plot in the way you find it suitable.

Regards,
Radovan

Hi

It would be excellent, if it was possible to change the scale on the axis'es, to make them "human readable" :-). Instead of the binary scale "128, 256, 384, 512..." I would prefer "100, 200, 300...".

It is difficult to read, which x-value corresponds to at given y-value. I know it is possible to achive this by using the solve-function, but my students must be able to read the value manually...

Yours

Michael

Hello Andrey,

This is very welcome . I remember, I waited this to be in Mathcad for many years. I think this is still not possible (not sure, but anyway it is not important anymore).

I hope that line thicknes and point size options will be introduced in SMath sooner or later, including representing plots with lines and points on the sam graph. However, it crossed my mind that point plots can be made by the features you explained. We can use at least three columns X, Y and the third colum with the same character say "x". Then we could have a "plot" with points. Hmm..., I was thinking something. I think there is no matrix function which will fill the matrix with the same elements, say a character. Never mind, we could use "for" loop here. I hope I am right about all of this.

Regards,
Radovan

EDIT: It seems I am not quite right about "plotting" characters. Based on the exmaple picture, it seems that the character will be placed on the graph with its upper left corner at the x-y coordinates given.

Edited by user 18 August 2010 09:39:46(UTC)  | Reason: Not specified

Hello.

Greg Locock, no, "plotter" is just a variable to store all the graph commands (i.e. text, functions and dots drawings) - you can use any other or not to use it at all (by putting all the commands directly on the graph's placeholder).


Good point! I've tested it and see an observation here. This is how it looks like today:

As you can see, centres of the chars are not in the right places and actually I can't imagine a way to find out the right centre of the symbols (note, that f.e. "x" char has different centre point depending on Font name). As a solution I think to handle some special chars (f.e.: "x", "*", ".", "o") to draw them correctly.

Best regards, Andrey Ivashov.

Hello Andrey,

Yes, that's I was thinking about. As I understood you well, if the third column is a single special character like (f.e.: "x", "*", ".", "o") then you can adjust the position of the character in order to be its center on the given coordinates. Why not, that would be Ok with me. I do not know if you can make a special devoted function for plotting points, character. I suppose not because you would have done that already. For instance, if there would be a function like this:

r:=plotter(X,Y,"char",size,"color" )

and to put just "r" in the graph - that would be, I do not know, just great

Regards,
Radovan

EDIT: Yes, you are right about Matlab (I wrote this just before your comment). Besides Matlab, many other software uses similar functions to make plots.

Edited by user 18 August 2010 14:54:47(UTC)  | Reason: Not specified

Hello Andrey,

I think we understood eachother about the character location and coordinates, and sorry for the "center"and "centre" - I interchange them often.

Regards,
Radovan

P.S. On the basis of an example you sent me, I was trying to make plots with small circles. I've given up because it seems to me to complicated at the moment.

Edited by user 18 August 2010 16:53:30(UTC)  | Reason: Not specified

Hello Andrey,

I am qute surprised and satisfied with what I see in your screenshot . Did not quite understand what is happening in the "for" loop, but never mind.

EDIT: I think I figured out now . First row of zeros confused me.

It looks that you did it in almost no time . That's something SMath is missing for a long time.

Looking forward to see it in 0.90

Regards,
Radovan

P.S. About GB/US I hardly know what the exact differences are. I am writing the words which are on my mind without to much thinking.

Edited by user 18 August 2010 19:12:53(UTC)  | Reason: Not specified

OK. To provide some testing I've decided to release alpha version:

SMathStudioDesktop.0_89_2.Setup.msi (Date: 18.08.2010. File size: 1.35MB)
SMathStudioDesktop.0_89_2.Portable.exe (Date: 18.08.2010. File size: 17.3MB) - .Net Framework 2.0 doesn't required

Most important changes:
- plenty of bugs fixed;
- Several physical constants added;
- Area activated in the Insert menu. Important! You can open and save files with collapsed or expanded Area, but you cannot add any new items, move or delete already existed items and there are several other limitations while one or more Areas on the page collapsed! To make any changes you must expand Area(s)!
- Added ability to draw text on the Plot canvas.


I also hope to finish the work on the Area control ASAP.

Regards.