Excel chart not correctly reflecting data - excel

I have two sets (August and February) of SCADA data that contain a time stamp and a tank level. The tank level is on the y axis, and the date/time on the x axis. I am trying to display this as a smooth line, scatter plot. The February data displays correctly in the chart, but the August data does not. It looks very irregular, and it shows an odd date range (from January of 1900 to March of 1934!). The odd thing as that the data looks the same; although the August data doesn't appear to automatically assign AM/PM to the time stamp. Any help would be much appreciated.

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How to change start point of Major Gridlines in an excel chart?

I have a chart that has data starting in September 2011 until April 2019 (monthly data). I have plotted it on a chart and put the year of the data on the x axis. The cosmetic issue I have is that the first text label on the x axis ("2012") is shown nearly half way through the first 'major gridline' point.
What I want is for each year to line up with each 'major gridline'. This would involve starting the first major gridline 5 data points in - not 12 as I have as standard. For the life of me I cannot work out how to change this.
I know I can change the data so that my x axis "starts" at 2011. The issue with this is that the value points that are unavailable (Jan-11 to Aug-11) are set at 0 and therefore mess up the trendline.
Any suggestions?
Thank you.
Did you try as below?
I'm thinking just add the missing months to the graph's data and have empty values. Empty values don't seem to affect your trendline.
So, just to prove my comment of a dummy data line and added a trendline to each with the formula shown - which happens to have the same values.

Re-arrange Axis of MS Excel 2016 Scatterplot

Software: MS Excel 2016
Files: GitHub Repository
Referring Question: MS Excel Scatterplot converts Months to Numbers
I created scatterplot in month_unordered_axis.xlsx from following data
Then I customized X-axis so it displays only month
Unfortunately the scatterplot (in Chart1 of month_unordered_axis.xlsx) starts with October rather than January.
How to order the X-axis so it displays from January to December?
Your graph is displaying October as the minimum value from its automatic formatting of max/min values. i believe if you scroll up in that formatting window on the right while you have the X-axis selected you will see an option for min and max value. You could set this for the minimum value you in your graph to 36892. This corresponds to the integer value for you lowest date in your series. The unfortunate side effect is that half your circle will be cut off as it extends into the range that is less than your minimum value. You can also set your maximum date to 37256. There are a few other end numbers you can use to give the same results but its essentially the end of December start of January the following year that allow December to be displayed.
Now if you want every month to be displayed (which is independent of placing max min values on your graph), look for the UNITS and Major box. Since you will want ever major line displayed with the name of a month, you will need to make sure the next grid line is a month away. Since not all month are not equal in length you need to play with this number a bit to suit your needs. I started with 30 and wound up with 2 Januaries back to back. However bump it up to 31 and then it tips over into the next month.
The important thing to note here is that you are not actually graphing by months along the X-axis. You are actually plotting by the number of days since January 1st 1900. so January 1st 2001 is 36892 days since January 1st 1900. What excel is doing is counting those days, determine what the date is in a way we like to read it and displaying only the portion we want it to. So for mmmm it the full spelling of the month. And you can see why each grid line being 31 days away is needed to jump into the next month. The kicker is, the grid line is not necessarily the 1st of each month due to the over stepping that is done when you advance 31 days in a month that has 28, 29, or 30 days. and that error gets compounded through the year.
Try using 32 as theMajor Unit step first before putting min and max caps on. (31 resulted in Feb being skipped on my screen). You should still see your axis start before Jan, but your months should all be in order, all displayed and no circles being cut off. Adding the max and min to the axis will cut off your circles but limit the axis to only displaying 12 months.

Assign Date to PivotTable in Excel

So,
I cannot find a solution.
I have a very large file with timesteps from 1950 to 1970, daily.
I want to plot the date on the x axis with its values on the y axis.
So I marked my values with the dates, clicked on "Insert" and then "PivotChart" and everything looks fine.
I want to define the timesteps shown on the x-Axis (Just every second year i.e.) but it seems that the PivotChart does not recognize that my x-Axis values are dates.
Any Ideas how I can change that?!
Thanks a lot!
I don't think you can use a Pivot Chart according to the Display dates on a category axis article at support.office.com.
I suppose you'll need to use a Line chart if you want to display by every two years.
You can also group the data in the Pivot Table, which will cause a corresponding change in the Pivot Chart. In Excel 2007, that was limited to every year -- without an option for multiple years (as there is for days). But perhaps that has changed in later versions?

Excel: Every other date on X-axis displayed fromthe end

I have a set of dates and matching numbers in excel, one number for every month in 2013. I need to display these numbers with the dae on the X-axis in a simple line graph. I am mainly intereseted in the number for the last month but also the historical numbers.
It is to crowded on the X-axis to show every single month so I only show every other month. This is easily done by right clicking the axis etc.
Now, since the last month is the most important one I would like to show that month (2013-12) and every other month backwards.
The axis should look something like this:
2013-02, 2013-04, 2013-06, 2013-08, 2013-10, 2013-12
But no matter how I change in excel I end up with this:
2013-01, 2013-03, 2013-05, 2013-07, 2013-09, 2013-11
Since the last month (december) is the most important one I would say it is logical to display that month.
The only way I can get it working is by dropping the first observation which I don't want to do.
Any suggestions how I can et this working in excel?
You have a "fencepost problem". You want to display 12 values, but if you want to display every second one, either you take all the odd numbers (in which case december is hidden) or all the even ones (which hides january)
If you're okay with hiding january, then add a dummy month at the beginning of your series, and give it the value:
=na()
Excel will allot it space but will not give it a point on the graph.
Alternately, if your axis is too crowded, turn the label text sideways or put the year 2013 in the title and only put the months on the x axis (1, 2, 3, ..., 12)

How to get an Excel graph show "up to" current day of week

In Mac Excel 2011 I have a Scrum burndown chart that tracks the number of points ‘burnt’ per day (starting from say 100, hopefully burning down to 0).
The number of points per day is made up of a sum of X number of columns (tasks).
I then have a marked line graph which takes it’s Y value data from the summed points per day.
My issue is that the marked line graph will always display 5 work days worth of burn, even though we might be on Tuesday.
I need a solution that means I don’t have to manually update the graph y value each day (adding it), instead the graph knows it is Wednesday, and selects data up to Wednesday.
Do you want to show the days for the whole week? (probably, since a 1 or 2 day chart early in the week will look funny.) Are the Y values linked from another cell?
If so, change your links from
=A1
to
=IF(LEN(A1)=0,NA(),A1)
NA() produces #N/A in the cell, which isn't plotted.

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