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Download
Please download on PC (not smartphone) and extract the ZIP file. Then double-click VCSSL.bat (batch file) to execute for Microsoft® Windows®, or execute VCSSL.jar (JAR file) on the command line for Linux® and other OSes.
For details, see How to Use.

2D Graph Tool for Plotting Expressions of the Form of "y = f(x)"

This VCSSL program is a simple tool which plots the expression (formula) of the form of "y = f(x)" to the 2D graph.

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How to Use

Download and Extract

At first, click the "Download" button at the above of the title of this page by your PC (not smartphone). A ZIP file will be downloaded.

If you are using Microsoft® Windows®, right-click the ZIP file and choose "Properties" from the menu, and enable "Unblock" checkbox at the right-bottom (in the line of "Security") of the properties-window. Otherwise, when you extract the ZIP file or when you execute the software, security warning messages may pop up and the extraction/execution may fail.

Then, please extract the ZIP file. On general environment (Windows®, major Linux distributions, etc.), you can extract the ZIP file by selecting "Extract All" and so on from right-clicking menu.

» If the extraction of the downloaded ZIP file is stopped with security warning messages...

Execute this Program

Next, open the extracted folder and execute this VCSSL program.

For Microsoft® Windows®

Double-click the batch file "VCSSL.bat" to execute.

For Linux®, etc.

Execute "VCSSL.jar" on the command-line terminal as follows:

cd <extracted_folder>
java -jar VCSSL.jar

» If the error message about non-availability of "java" command is output...

How to Use After Executing the Program

Windows and UI

The following two-windows will be launched. The left one is the input-window, and the right one is the graph-window.

The input-window(left) and the graph window(right)

Input an Expression to Plot

At first, please input an expression you want to plot into the text field labeled with "y(x) =" at the top of the input-window. There are some points to write the expression:

  • Use small character for "x".
  • Arithmetic operations such as "+" and "-" are available. However, some symbols of operators are different with handwriting expressions. Use "*" for multiplication, and use "/" for division.
  • Multiplication and division are prior in calculation order than addition and subtraction.
  • You can mathmatical functions such as "sin" and "cos" in the expression. The value of circle ratio is available as "PI" (capital character).
  • The exponentiation operator is "**". For example, x2 should be written as "x**2" in the expression.

Plot a Graph

After inputting the expression, please click "PLOT" button at the middle of the input-window, and the expression will be plot to the 2D graph.

The graph will be drawn as a lines-and-points* graph of "x-N" nodes. You can modify the value of "x-N" on the input-window. Larger value of "x-N" makes graph more smooth.

* If you plot lines-only graph, please see Other Features.

Plot new Expressions over the Current Graph

If you want to plot other expressions over the current graph, simply modify the expression of "y(x) =" text-field, and click again "PLOT" button. The new expression will be plotted over the current graph by using a different color.

Clear All Contents of the Current Graph

If you want to clear all contents of the current graph, please click "CLEAR" button at middle of the input-window.

Other Features

With the default settings, the graph will be plotted as a lines-and-points graph. If you want to plot a lines-only graph, please disable the checkbox of "With Points" from the "Option" menu at the top of the graph-window. In addition, if you want to change the width of lines, please disable and re-enable "With Lines" option, and you will be asked the line width.

You can modify other settings from "Edit" menu at the top of the graph-window, e.g. X & Y ranges of the graph, labels of X & Y axes, legends for each lines of the graph, etc.

You also can save settings and save the image of the current graph, from "File" menu at the top of the graph-window.

RINEARN Graph 2D
The 2D graph software "RINEARN Graph 2D" is used as the graph-window of this program. If you like UI and operability of the graph-window of this program, please try to use RINEARN Graph 2D for your data-analysis use.
» More Details

Code

This code is written in VCSSL.

Author

Fumihiro Matsui
[ President of RINEARN, Software Developer in Japan, Doctor of Science ]
Welcome to our website! ... and sorry for my poor English.
I'm developing VCSSL, Vnano, RINEARN Graph, RINPn, and so on. If you have any questions, please feel free to contact me by e-mail, or contact to my personal Twitter account.

License

The license of this VCSSL / Vnano code (the file with the extension ".vcssl" / ".vnano") is CC0 (Public Domain), so you can customize / divert / redistribute this VCSSL code freely.

Also, if example code written in C/C++/Java are displayed/distributed on Code section of this page, they also are distributed under CC0, unless otherwise noted.



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Japanese English
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