How can you create a historical graph?

[BunnyHop]

I would like to create a graph that would show values compared from an initial source.

Here's an example:

[file1.txt's content]
value1,name1
value1,name2
value1,name3
value2,name1
value2,name2
value2,name3
value3,name1
value3,name2
value3,name3

[file2.txt's content]
value1,name1
value1,name2
value2,name2
value2,name3
value3,name2
value3,name3

[file3.txt's content]
value1,name2
value2,name2

I would like to show on a bar/line graph the number per value.

[fdi01]

the number per value
index=your_index_naume source=file*.txt | chart count as numbers by value

or
index=your_index_naume source=file*.txt | eval number=value|chart c(number) as numbers by value

after search you select a bar/line graph.

[gkanapathy]

I'm not sure I understand, but assuming you've defined for each source/sourcetype fields named value and name for each respective column in the data, seems like one of the following:

source=file*.txt | chart count(name) by value
source=file*.txt | chart distinct_count(name) by value
source=file*.txt | chart count by name,value

would do it.

[sideview]

The chart command will take the N values of the 'value' field and create N new columns in the results for them. the stats command will instead give one 3-cell row for each unique combination.

Bottom line: if it turns out you want a table that has 3 columns: name, value, and count, then you'd want
stats count by name, value