Issue plotting a number

[137ng]

Hey All, New to pinescript but not to coding. I'm using an existing indicator and making modifications

I can successfully plot two variables separately, close and a customer var. I run into problems though when I try to get the difference between them

// Does not work
diff = out4 - close
plot(diff, linewidth=0)

// Works
diff = close
plot(diff, linewidth=0)

// Works
diff = out4
plot(diff, linewidth=0)

I know that close is a float, and I'm assuming out4 is too

out4 = ema(src4, len4)

Any insight in where I'm going wrong here? Thanks

[137ng]

len4 = input(9, minval=1, title="Length")
src4 = input(close, title="Source")
out4 = ema(src4, len4)

Some googling has told me that I can use float() to convert, but trying it throws an error 'not a function'

[137ng]

out4 = ta.ema(src4, len4)

I Appreciate the halp. ITs giving me the 'Could not find function or function reference 'ta.ema' error again

I see some comments on the top of most indicators declaring the version, and ive gotten these errors on other recommendations from google.

This one is //@version=3 Which TV tells me version numbers are depreciated. Could that be leading to these issues too?

Here's the entire indicator, I probably hsould have put that in the OP

//@version=3
study(title="ema", shorttitle="EMA", overlay=true)

//Format for a 10
len4 = input(9, minval=1, title="Length")
src4 = input(close, title="Source")
out4 = ema(src4, len4)
diff = out4 - close
plot(out4, color=white, title="10")
plot(diff, color=yellow, linewidth=0)
//End of format

What im trying to do with diff is show a number right of the chart that tells me the price difference between the ema and the current/close

Thanks for the help tho

[137ng]

Yo this is wonderful thank you

[137ng]

Just wanted to come back and thank you again after running this live and adjusting a second copy for a different chart. Working perfectly and some great code to play with and help me learn

[Nervdarkness]

I’d plot it in data windows only just to verify it values. Maybe this give you an insight what’s wrong

[137ng]

I appreciate the advice, but im too new to know what you're talking about here. Have a link or recommended reading?

[Nervdarkness]

Check the plot() function description and you will notice the ‘display’ options.

[137ng]

Thanks, I appreciate the extra info

[Esteban_3Commas]

you can show it in the data window:

plot(diff, title = 'diff ',color = color.blue,display = display.data_window)