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Kaik
Level I

Displacement of error bars on a multi-line chart

Hello,

 

I have a problem that I'm having a little trouble solving, let's see if someone can help me. I am trying to make line graph run in Graph Builder like this:

 

Kaik_0-1731583577956.png

 

So far so good, a line chart whose statistic is the mean. The problem comes when I try to add the error bars, which causes the points to move out of the corresponding x-axis category. This causes confusion and a bad visualization of the data. Attached is the example:

 

Kaik_1-1731583745649.png

 

Is there any way to solve this problem?
Thanks in advance!

 

Quique

2 ACCEPTED SOLUTIONS

Accepted Solutions
txnelson
Super User

Re: Displacement of error bars on a multi-line chart

@MRB3855 response above is the correct answer.  My response below is an Old School solution. But once again, I learn something new about JMP every day.

 

What you are seeing is because the X axis is either nominal or ordinal.  In your example it appears to be a Character column, which is nominal.  If you recode the values to numeric, continuous, and then use the Value Labels column property to map the numeric values back to the 1/2 gemmes, Control, Defoliacio labels, the offsets will be eliminated.

Here is an example using the sample Big Class data table where by default the Age variable is numeric, ordinal.  When plotted in a similar layout as your chart, it has the same issue with the offsets.

txnelson_0-1731587793484.png

In the below graph, I changed the age column to be continuous, and added Value Labels to convert the numeric values to be displayed as character labels and the offsets are eliminated.

txnelson_1-1731587933198.png

 

Jim

View solution in original post

MRB3855
Super User

Re: Displacement of error bars on a multi-line chart

Hi @Kaik : Hmmm, how about this? Go to red triangle next to "Graph Builder" and choose "Error Bar Offset...".

MRB3855_0-1731587986957.png

 

View solution in original post

6 REPLIES 6
MRB3855
Super User

Re: Displacement of error bars on a multi-line chart

Hi @Kaik : Looks like a jittering issue. Set Jitter to none.

MRB3855_0-1731586223814.png

 

Kaik
Level I

Re: Displacement of error bars on a multi-line chart

Hi MRB, 

 

Thanks for answering. It doesn't appear the option jitter when I choose line graph, instead of point graph!

Kaik_0-1731586382704.png

 

MRB3855
Super User

Re: Displacement of error bars on a multi-line chart

Hi @Kaik : Hmmm, how about this? Go to red triangle next to "Graph Builder" and choose "Error Bar Offset...".

MRB3855_0-1731587986957.png

 

Kaik
Level I

Re: Displacement of error bars on a multi-line chart

Thank you for the solution!!

 

Quique

txnelson
Super User

Re: Displacement of error bars on a multi-line chart

@MRB3855 response above is the correct answer.  My response below is an Old School solution. But once again, I learn something new about JMP every day.

 

What you are seeing is because the X axis is either nominal or ordinal.  In your example it appears to be a Character column, which is nominal.  If you recode the values to numeric, continuous, and then use the Value Labels column property to map the numeric values back to the 1/2 gemmes, Control, Defoliacio labels, the offsets will be eliminated.

Here is an example using the sample Big Class data table where by default the Age variable is numeric, ordinal.  When plotted in a similar layout as your chart, it has the same issue with the offsets.

txnelson_0-1731587793484.png

In the below graph, I changed the age column to be continuous, and added Value Labels to convert the numeric values to be displayed as character labels and the offsets are eliminated.

txnelson_1-1731587933198.png

 

Jim
Kaik
Level I

Re: Displacement of error bars on a multi-line chart

Thank you for your time Nelson!!

 

Quique