I am trying to generate random numbers in Tableau between 1 and 15. Currently, I am using the Random() function. However, this returns random numbers in the [0,1] interval. Does anyone know how to get whole integer values instead?
I am using this feature to try to both randomize and anonymize the names of 15 people.
Thanks!
Actually random is the function you should look for, even thought it returns numbe from 0 to 1.
According to the integer number you are trying to get, why don't you multiply the result by 10/100/1000/etc and then use the round function in order to get rid of the rest?
Related
I have a pretty straightforward survey dataset. Each row is a respondent, and each column is a question. Responses have a value that is a whole number, and each number has a label.
Now, I need to replace all of those values with fake data to use in a training. I need something that looks and feels like the original dataset, but isn't actually client data.
I started by replacing my variables with random number values:
COMPUTE Q1=RV.UNIFORM(1,2).
EXECUTE.
COMPUTE Q2=RV.UNIFORM(1,36).
EXECUTE.
COMPUTE Q3=RV.NORMAL(50, 13).
EXECUTE.
(rv.normal/rv.uniform depending on what kind of data I'm trying to fake - age versus multiple-choice question, for example).
This works, but then when I try and generate crosstabs, export the dataset w value labels, etc., the labels aren't applied to the columns with fake data. As far as I can tell, my fake numbers are in the exact same format they were in before - numeric, no decimals, width of 2, nominal. The labels still appear in the variable view, but they aren't actually being applied.
I'd really prefer not to have to manually re-label every one of these columns, because there's quite a few of them. Any ideas for how to get around this issue? Or is there a smarter way to generate fake data?
Your problem is the RV.UNIFORM and the RV.NORMAL functions do not generate integers - they generate decimal numbers. You may have your display hide the decimal numbers by having 0 decimals in the variable view, but they are still there (you can check this by adding decimals in the variable view).
So you neen another step of turning your decimals into integers. For example, the following are two ways to get a random 1 or 2 (integers):
COMPUTE Q1=rnd(RV.UNIFORM(1,2)).
or
COMPUTE Q1=trunc(RV.UNIFORM(1,3)).
Once the numbers generated are integers corresponding to the value labels definition, you should be able to see the labels in the output.
I have a boolean/logic variable (values 0, 1) and I need to know dataset size in order to do some math (like calculating percentages)
For example, if my dataset has 250 rows, I want to do something similar to this:
Count([variable]) / 250
The point is that i dont know dataset's length (it will use different datasets each time). Thats why I need a function similar to R length(data$variable) who gives me the amount of rows in the variable.
Ive tried without success different count() combinations. Anyone knows a length() function or similar to know the amount of rows?
Based on your question, I believe Count(RowId()) would work.
Here is my situation, i am currently creating a Yahtzee game using Turbo Pascal Language in Lazarus IDE and i am up to the scoring side of the developement, i have already completed the Lower section of scoring and i have started the Higher section but i need some help writting a procedure to check for a three of a kind, my initial thought was to use an array and load the random numbers for the dice values and then use a loop function to check for 3 equal numbers but i'm not very confident in this area. Could i get some help ? I'm not asking for code, although it would be helpful, just a push in the right direction.
My dice integer value variables are, "Dice1" , "Dice2" , "Dice3" , "Dice4" , "Dice5" , "Dice6"
I think the conceptually simplest approach is to have an array of six counters - one for each possible value - that you initialize to zero and then loop over your dice array and increment the counters with each die's value.
You can then check if any of the counts becomes 3 (or more).
Or sort and then iterate to see if you have 3 same values in a row. The sorted array with dice values is also usable for the other detections like street, Carré (four of a kind), Yathzee etc.
I have a short random number input, let's say int 0-999.
I don't know the distribution of the input. Now I want to generate a random number in range 0-99999 based on the input without changing the distribution shape.
I know there is a way to make the input to [0,1] by dividing it by 999 and then multiple 99999 to get the result. However, this method doesn't cover all the possible values, like 99999 will never get hit.
Assuming your input is some kind of source of randomness...
You can take two consecutive inputs and combine them:
input() + 1000*(input()%100)
Be careful though. This relies on the source having plenty of entropy, so that a given input number isn't always followed by the same subsequent input number. If your source is a PRNG designed to cycle between the numbers 0–999 in some fashion, this technique won't work.
With most production entropy sources (e.g., /dev/urandom), this should work fine. OTOH, with a production entropy source, you could fetch a random number between 0–99999 fairly directly.
You can try something like the following:
(input * 100) + random
where random is a random number between 0 and 99.
The problem is that input only specifies which 100 range to use. For instance 50 just says you will have a number between 5000 and 5100 (to keep a similar shape distribution). Which number between 5000 and 5100 to pick is up to you.
In cell A1:A50 i have random numbers geberated by formula ( from 0 to 20), now what ever i do these numbers keeps on changing all the time, so i want to know the formula which will shuffle these random numbers automaticallly till the series whcich have got 5-12-19 in a row will appear. I would really appriciate if some one can help me out of this problem...Thanks
I think you're going to need a VBA function returning an array. That VBA function will have to continually generate sequences of numbers until it gets what you want (why you want this is another matter!).
Sorry - I'm not a VBA whizz, so I can't put this together easily for you.