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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.

- Index -

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). Then a ZIP file will be downloaded, so please extract it (by selecting "Extract All" 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.

License

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

Japanese English
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