Im new on Tableau Desktop.
I was starting to import data from a csv. file.
Some columns don't display decimal number, but instead, null value.
And I check, format is the good one (number with decimal).
In my csv. file, I can see my column with values :
And in Tableau :
Sometimes, data appears and sometimes not, that's weird.
So, What option do i choose ?
Thanks in advance.
Your data range is the issue here. You can right click on the Y-axis and edit the axis
Related
This table is created using a mixed data source (Cloudwatch + Mysql) on Grafana.
Field
Datatype
Time
Timestamp
Metric
String
Value
Integer
Now I'm unable to convert this table to a graph.
If graph option is selected from Visualization tab, X-axis is Time, Y-axis is value and no legend is present.
Can someone please help. Thanks in advance.
You can use Transform > Prepare time series > Multi-frame time series.
In my example table, I only have a single date, but it should work with more. This is my table before: 1 date, 4 labels with their values
When I use the transform, the table becomes 2D and my label column is recognized as such
Yayy we can plot time series now!
Couple of things to try. Rename the mount_point column to "metric" and rename readops to value. This will hopefully help Grafana interpret the data. Are you sure the mount_point is a string data type, if not convert that to a string
I want to build a line graph, and I have missing dates in my data. I would like to get value 0 for the missing dates.
With the option 'Show Missing values', all dates are shown in the graph. But the missing dates do not have any values but they appear and the line passes over them.
Values for missing dates are not real NULLs. And therefore, I can not use functions like IFNULL or ZN to transform NULL values to 0, because it is not a real NULL. Do you know how to solve the problem?
Thank you!
Create a calculated field for measures in your graph:
IF [Dates]=NULL THEN 0 ELSE [Measure]
Use this calculated field instead the original measure.
Use the below calculated field and then click on date field pill and choose the option "show missing values"
ZN(SUM([Amount])) * (IIF(INDEX()>0 ,1, 1))
I am very new to MATLAB. I am sorry if my question is basic. I am using "printmat" function to show some matrices in the command console. For example, printmat(A) and printmat(B), where A = 2.79 and B = 0.45e-7 is a scalar (for the sake of simplicity).
How do I increase the precision arbitrarily to seven decimals? For example: my output looks like 2.7943234 and B = 0.00000004563432.
How do I add a currency (say dollar) figure to the output of printmat?
How do I add a percentage figure (%) to the output of printmat?
Note: The reason I use printmat is that I can name my rows and columns. If you know a better function that can do all above, I would be glad to know.
Regards Mariam. From what I understand, you would like to display the numbers and show their full precision. I am also newbie, If I may contribute, you could convert the number data to string data (for display purposes) by using the sprintf function.
I am using the variable A=2.7943234 as example. This value will not display the full precision, instead it will display 2.7943. To show all the decimal tails, you could first convert this to string by
a = sprintf('%0.8f',A);
It will set the value a to a string '2.79432340'. The %0.8f means you want it to display 8 decimal tails. For this example,%0.7f is sufficient of course.
Another example: A=0.00000004563432, use %0.14f.
A=0.00000004563432;
a=sprintf('%0.14f $ or %%',A);
the output should be : '0.00000004563432 $ or %'.
You could analyze further in https://www.mathworks.com/help/matlab/ref/sprintf.html
You could try this first. If this does not help to reach your objective, I appreciate some inputs. Thanks.
The printmat function is very obsolete now. I think table objects are its intended successor (and functions such as array2table to convert a matrix to a table of data). Tables allow you to add row and column names and format the columns in different ways. I don't think there's a way to add $ or % to each number, but you can specify the units of each column.
In general, you can also format the display precision using format. Something like this may be what you want:
format long
I was wondering if somebody could help me with this one. It’s probably so simple, but its got me at a loss.
I have a Excel spreadsheet looking like this
Basically it’s a simple if statement if A1 = 10 then B1 will display 600, if not it will display a 0. It works ……but I can not format the number in B1, I right click Format cell, number, and select currency with 2 decimal places. No change . Colour, alignment, Boarder and fill works, its just the number type will not. B1 will feed other cells to workout a formulas. I need it in a currency format.
Does anyone know the answer to this.
Thanks in advance
David
Use the integers instead of strings. Excel interprets your strings as... well... strings, and not numbers. Change your strings to numbers like this:
=IF(A1=10,600,0)
This should work and it should justify right again.
I have a text file with two columns: "date" and "cumulative value". I'd like to difference "cumulative value", as a calculated field in the data source.
I cannot even get a lag value:lookup([cumulative value],-1) produces an error.
Thank you.
There are two things you can do.
Create a new field with the following formula:
SUM([cumulative value])-LOOKUP(SUM([cumulative value]),-1)
Tableau requires an aggregation for you to use the LOOKUP function. Hence why I used the sum function. Then you could plot that against DAY(Date).
OR
Plot DAY(Date) against SUM(cumulative value), then right click SUM(cumulative value), click Quick Table Calculation, and then Difference. This can only be used/done in plots though.