how to plot datetime against temperature in waveform chart

[lil_racoon]

Hi Guys,

I am trying to plot data from my table, and want to plot a date time value on the x axis and the temperature value which will look like 32.5c

on the y axis on a waveform chat. I am new to measurement studio, anyone have an example on how this is done?

I have a for loop which loops and gets the data from each row ( the time and temp) and i want to plot in each loop as i go,

so the graph will be building, and the user can see it building until i have read all the records.

[Ryan_T]

Hi lil_racoon,

A waveform chart normally uses a 1D array with indexes and you can manually adjust the x-axis.  If you are looking to plot data from a 2D array you will want to use the scatter graph and make a scatter plot. I would take a look at this tutorial on how to create custom scatter plots and waveform plots.

[lil_racoon]

Thanks, will take a look, is it possible in scatter groph to plot against a datetime on the xaxis? or it has to be numeric values

[lil_racoon]

Also in scatter graph u can plot with x y however it takes only a double value for x, and i have a date time value for my x, do i have to convert that to seconds? if so i want this to be represented as a date time value on ma x range rather than in seconds

[Ryan_T · Accepted solution]

Hi lil_racoon,

Thank you for the additional information.  After looking at what you are trying to do, I beleive that the attached code will accomplish your goal.  Try to adjust it to work for your application.

Thanks

[lil_racoon]

Thank you so Much Ryan! =D thats exactly what i want!