I am trying to create a chart where the interval on the X-axis will redefine itself depending on the 2 time parameters I have set up for the report; I have a #StartTime and a #StopTime. If the difference between the dates is one day, I want the graph axis to show a mark at each whole hour during that day. But any more than a day then the interval can be automatically determined by the program.
I have manually set the difference between the 2 parameters to be 1 day and set the interval and interval type to "24" and "hours", respectively, which gives me the desired results.
I have tried the following function for the interval:
=IIf(DateDiff("d",Parameters!StartTime.Value,Parameters!StopTime.Value)=1, "24", "Auto")
And I have tried the following function for the interval type:
=IIf(DateDiff("d",Parameters!StartTime.Value,Parameters!StopTime.Value)=1, "Hours", "Auto")
I created 2 random textboxes into which I inserted these functions to test if the functions are actually working, and they are. So I can't figure out why the functions won't execute properly when inserted into the interval properties fields.
Why is this not displaying the desired outcome?
Instead of using the text "Auto", use a Nothing to represent Auto.
eg:
=IIf(DateDiff("d",Parameters!StartTime.Value,Parameters!StopTime.Value)=1, 24, Nothing)
If I recall correctly, you can't change the the axis type at render, which seems like what your trying to do. Honestly I think this might be a case for cheating, make the chart twice, one for each axis type you want, and then conditionally hide them based on a similar Iif statement to the ones you have above.
Other thoughts, 24 is not the interval you want, interval is how much of the x-axis is displayed as tic marks. 1 means 1 tic for every 1 value, 2 means every other one, and 24 if it works would be showing every 24th value (haven't tried it). You want a number interval with a type of hour and an interval of 1 because you want to show every hour. You'll also have to change your x axis to:
=datepart(hour, Fields!YourDateTime.Value)
Otherwise the numbers axis type won't work. You can use similar expressions to create day over day time comparisons. Anyway, good luck!
Related
I have some data matrix, the first column is date and the second column is time.
I changed it into a table:
H1 = readtable(filename, 'ReadVariableNames', 0);
H1.Properties.VariableNames =...
{'Date', 'Time', 'Value'};
t = datetime(H1.Date, 'InputFormat', 'yyyy.MM.dd');
H1.Date = t;
clear t
Now, I want to make a sub-table. In this table, the date of the data doesn't matter, but the time of the data must be between 18:00 and 11:00 the next day.
My time format is hh:mm (24 hours).
How could I do it?
I think I could make another column. For each time string, I take only the first 2 characters and convert it to a number (e.g. '05:00' will be changed to '05' and then 5). After that I could index the new column I created.
Nevertheless, I think there must be some other and easier ways to do it.
How?
In addition, if this works, I want to write a function based on this.
I want to give a certain day and time, and plot all the data +-48 hours (or -24 hours and +72 hours) around this day and time.
For example, if I give '2016-06-22', '05:00', then I want to plot all the data ranging from '2016-06-20', '05:00' to '2016-06-24', '05:00'. Any strategy suggestion?
Given that my data size is quite big, speed is a factor that we need to take into consideration.
Thanks!
I am currently exploring Tableau and I wonder if it can do the following.
Let's say I have a table with two columns, A and B. Let's say A can attain discrete values from a small set (maybe 10 different values), while B has continuous values. I would like to plot a box plot where on the x-axis are the 10 possible values of A, and on the y-axis the box plots. Each box plot shall contain values from B for a given value of A.
In case I have not made myself clear enough, here is an example. Consider data containing average temperature on each day within one year, labeled by week days. That is, we have 365 pairs (A, B), where A is a value between 1 to 7 (day of week), and B is the temperature. I would like to have 7 box plots, each containing data for the particular day week. (To prove that on Mondays there is always bad weather :))
Changing the problem slightly to assume the columns are named Date and Temp, and that Date is a real date with a month, day and year. On the data pane (left margin), make sure the Date field is a discrete (blue) dimension with datatype date (not string).
Drag Temp to rows, make sure it is a continuous measure. I would choose the aggregation function AVG instead of Sum for temperatures.
Change the mark type from automatic to circle, and then drag Date to the detail shelf. Right click on the Date pill you just dropped and choose Exact Date.
Change to the Analysis table and drag in box plot from the Summary section. Format to taste.
To get one column per weekday, drag Date onto the columns shelf. Right click on the Date field on the columns shelf and choose Weekday from the context menu (submenu)
I'm trying to draw a temperature graph using iso-charts where the x axis data would be set from a server timestamp but the labels would be readable text.
For instance the graph x-axis label would start at Monday 00:00 and end Tuesday 12pm but the LineChartDataSet would be a collection of temperature (y-axis) and timestamps for the x
To display the timestamp I have a custom valueFormatter set as follow (which works great)
lineChartView.xAxis.valueFormatter = timestampXAxisFormatter() //converts timestamp to Date string
My question: The LineChartDataSet seems to be indexed based which is causing some trouble: if I have 4 data points such as (9am, 10), (9:15am, 11), (12pm, 15), (1pm, 16) the 4 points are set in the chart at regular intervals (I was expecting 2 points to be on the left side of the graph and then last 2 points on the right side) - Is there a way to have a data set that is based on the x value instead of the index?
I saw ChartData has an init that takes an array of NSObjects but then it converts it to Strings...Thanks in advance for any suggestions you may have!
There is no good way to solve it, as you figured out the x axis is index based.
You have two options:
insert many x values between each real x value, like between 9:00 and 9:15, you manually insert 9:01, 9:02, ..., 9:14, but don't add any entry at these values, just ignore it and continue. ios-charts will skip if no entry found and go to next. This will works fine, if you don't have a large number of values to insert. I tried ~1000 values, the performance is acceptable.
you create your own chart, using two y axis, one as x axis and one as y axis, so the distances to 0 point are calculated by value. However this requires you understand the ios-chart logic deeply. If you succeed, you are more than welcome to file a PR.
This relates to my How do I achieve a pivot report in Crystal Reports for Visual Studio? The data is the same, but they want a line chart as well.
So, my data is {datetime}, {car-id}. The X -axis of the chart must show the hour of {datetime}, the Y axis the number of cars that entered the park at that hour, and I must have seven data series, lines, one for each day of the week. So, e.g. the x/y point on the green line shows that on Wednesday, at hour x, y cars entered the car park.
Common sense tells me that I can kludge this by transforming the data source so that each day has its own column in a table, a table like this:
DateTime
WeekDay
CarCount
Yet the Crystal line chart doesn't seem to support more than one column, so there must be a different and better way of doing this. The weekday is part of {datetime} after all.
How can I achieve this chart? I am a rank amateur at charting, and Crystal's idiosyncrasies really aggravate my lack of skills and experience in this area.
It's not obvious how to get multiple series to show up properly.
First, create a formula that will extract the day of week from the datetime: dayofweek({datetime}) and then create another that will extract just the hour: hour({datetime}).
From there, insert a chart from scratch and make the following settings in the Chart Expert
Select "Line" under the Type tab
Under the Data tab, select "On change of" and select your {#HourOfDay} formula first. This will create each hour as a point on the X-axis.
In that same spot, also insert the {#DayofWeek} formula. This will create a new line
for each day of the week. This is, in my opinion, the non-obvious part.
Finally, to pick your Y-axis values,
select {car-id} where it says "Show value(s)". It should default to
the count summary of that field.
(Note: in the screenshot below, you would just replace {Customer.Customer_Name} with {car-id}
I had this issue for 5 years and finally solved it. I have a XY chart with multiple series.
Everything needs to be in a formula.
The graph should be in the report header section of a subreport. The sub report generates the X Y data like this:
Series X Y
Ser1 2020 1
Ser1 2021 2
Ser2 2020 0
Ser2 2021 1
For me I have as series "Energy" ie 6, 9, 12 etc.
Then I have a date/time and a measurement.
On change of (Energy formula)
Show Values
#1 DateTime (convert this to int ie 2000.9 for 9/2000) - dont summerize
#2 Measurement (number) - dont' summerize
Then you can do the color highlighter to capture your series (6 is red etc).
The legend won't work - can't figure out that yet.
I have time set up as serial dates. Each number corresponds to a day, in order, from 20100101 to 20130611. How do I convert the serial date to a date in the format month-year? I need this because I want to plot data and need the x axis to show the date.
Thanks!
The first step is to convert your date-format into one of the standard Matlab date formats. The best format to use for plots is the "serial date format". The numbers itself are a bit awkward, since they represent the "amount of time after 0/0/0000, in days", which is a huge number. Also, this date actually never existed, making it really weird when you want to work with dates that are BC.
However, the conversion is easy, since your format also counts the days, but you count after 31st of December, 2009. You can convert this using
numeric_date_vec = datenum(2009, 12, 31) + x;
You then plot your data using
plot(numeric_date_vec, y)
and you let Matlab add the date-ticks automatically by calling
datetick('mmm yyyy')
The problem is, the ticks do not update after zooming in. You can either call
datetick('mmm yyyy','keeplimits')
again, after each zooming or panning, or you download datetickzoom from the Matlab file exchange. It takes the same arguments as datetick, but it hooks into the zoom function and updates the ticks automatically.
Edit:
Sometimes, the dateticks are not spaced in any sensible way, then you can either try to zoom in and out a little until it snaps to something good, or you have to set the ticks manually:
% Set ticks to first day of the months in 2010
tick_locations = datenum(2012,[1:12],1);
% Set ticks on x-axis
set(gca, 'XTick', tick_locations)
% Call datetick again to get the right date labels, use option "keepticks"
datetick('mmm yyyy','keeplimits', 'keepticks')
You might have to modify the tick_locations = datenum(2012,[1:12],1) a bit to get the ticks that you want. For instance, you can use
tick_locations = datenum(2012,[1:2:25],1)
to get every second month between Jan 2012 and Jan 2013.
For day number n use
datestr(datenum(2009, 12, 31) + n, 'yyyy-mm')
for example
>> datestr(datenum(2009, 12, 31)+365, 'yyyy-mm')
ans =
2010-12
>> datestr(datenum(2009, 12, 31)+366, 'yyyy-mm')
ans =
2011-01