Volcano plot





Select a file Example











(threshold of fold change)




(threshold of P value or Q value)


(maximum number of x axis, optional)


(maximum number of y axis, optional)



The color of the nodiff

The color of the up

The color of the down

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Function:
A type of scatter plot that displays significant difference between two groups of data. The x axis is the log2 of the fold change between two groups, and the y axis is the negative log2 of P value or Q value. By coloring significantly different points from other points, one can recognize the significant difference between two groups of data.


Input:

Upload a tab delimited text file with headers. If your data is not TAB delimited, you can use Excel to convert it.


Parameters:

①Column for x axis: column for log2(FC).

②Column for y axis: column for P value or Q value.

③Threshold of x axis: threshold of fold change. Usually 2 or 1.5.

④Threshold of y axis: threshold of P value or Q value. Usually 0.05 or 0.01.


Output:
A volcano plot in PNG/PDF format.

Example:Volcano plot input file  
Output:

In the task interface, click on the “download” button to download volcano plot results in PNG and PDF format.

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