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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 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 Windows

Double-click the following batch file to execute:

VCSSL__Double_Click_This_to_Execute.bat

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.

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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News

Software Updates: Command Expansion in RINEARN Graph, and English Support in VCSSL
2024/02/05 - We updated our apps. This updates include "Enhancing the Command-Line Features of RINEARN Graph" and "Adding English Support to VCSSL." Delves into each of them!

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2024/01/17 - Delves into the update in Vnano 1.1 from a developer's viewpoint, providing detailed insights into the specific improvements made to the internal structure of the script engine.

Scripting Engine Vnano Ver.1.1 Released: Dramatic Speed Improvement for Repetitive Executions of the Same Content
2023/12/22 - Released the Vnano script engine Ver.1.1. In this version, we've made significant enhancements in processing speed by reducing the overhead of handling requests. Explains the details.

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