Histogra

[Noemi Peroblelli]

Hi
I want to create an histogram.

this is the command:
histogram dnascregdiacri_dif_days, start(0) bin(360) freq
xscale(range(0 600))
xtitle("Days Before Birth")
ytitle("Frequency")
title("Days Between Pregnancy Registration and Childbirth")
graphregion(color(white))
xline(90 180 270, lpattern(dash) lcolor(red))

and this is the histogram: How can I remove the space between the zero and the start of the x axis?
Thank you.

[Ali Gokhan Yucel]

Add:

plotregion(margin(0))

[Andrew Musau]

Deleted. #2 provides a more accurate answer.

[Noemi Peroblelli]

Deleted. #2 provides a more accurate answer.

Thank you for your answer - Using the "twoway histogram" command instead I got this histogram

[Noemi Peroblelli]

Add:

plotregion(margin(0))

Hi, thank you for your answer - I've added the command "plotregion(margin(0))" after my command, and I got the same graph. Where should I add the command?

[Ali Gokhan Yucel]

Please provide your data using dataex and your codes using code delimiters for reproducibility. See #12 in https://www.statalist.org/forums/help#stata

[Andrew Musau]

Place it as an option within the command.

histogram dnascregdiacri_dif_days, start(0) bin(360) freq ///
xscale(range(0 600)) xtitle("Days Before Birth") ytitle("Frequency") ///
title("Days Between Pregnancy Registration and Childbirth") ///
graphregion(color(white)) plotregion(margin(0)) ///
xline(90 180 270, lpattern(dash) lcolor(red))

[Noemi Peroblelli]

Place it as an option within the command.

histogram dnascregdiacri_dif_days, start(0) bin(360) freq ///
xscale(range(0 600)) xtitle("Days Before Birth") ytitle("Frequency") ///
title("Days Between Pregnancy Registration and Childbirth") ///
graphregion(color(white)) plotregion(margin(0)) ///
xline(90 180 270, lpattern(dash) lcolor(red))

It works!! Thank you

[Noemi Peroblelli]

Please provide your data using dataex and your codes using code delimiters for reproducibility. See #12 in https://www.statalist.org/forums/help#stata

I resolved, thanks

[Nick Cox]

See also

help spikeplot

I'd look at that outcome modulo 7.

gen remainder = mod(dnascregdiacri_dif_days, 7)
histogram remainder , discrete xla(0/6)

[Nick Cox]

That is, there seems to be some fine structure in your histogram beyond the general skewness. If it's not a side-effect of weeks, look at the last digit of the variable.

[Nils Enevoldsen]

Yes, the "bin(360)" might not be the right choice here if dnascregdiacri_dif_days is an integer. I think some of these bins represent two days and some represent one day. Try "discrete" or "discrete width(2)" instead.