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Frequent Visitor

## Random Generator from Gallery values

Hey all,

i want to implement a random generator for my App, but have no Idea were to start or whether it is even possible.

In my App, you type in a post code and the gallery gives you all agents available in this area. From different KPIs, stored in a Sharepoint List, i have calculated a value for each agent, based on all agents available. This value is not stored in the Sharepoint List, because it depends on the available agents, which depends on the typed in post code.

Now i want to implement a random generator based on those values which picks one agent. Is this even possible? Is it even possible to address those calculated values outside from the gallery?

My programming skills are very limited, so far i only searched for solutions and tried to adapt them for my purpose, so for this problem i have nothing to even start with.

5 REPLIES 5
Super User

I'm not sure I understand your entire question, but the Shuffle() function sounds like it will relate.

Will it help to?:

2. Shuffle and then pull the first agent from this collection using First(Shuffle(collection))

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Frequent Visitor

Shuffle will only do half the job, because it gives every agent the same chance to be selected (or be on top).

What i need is, that they have a chance to be on top based on the calculated value.

In my example, agent 1 has a 25,89% Chance to be selected (or be on top). Second 18,24%, third 26,76 and the fourth 29,09% Chance. If i can combine these chances with Shuffle, it would work.

I was thinking about a solution outside of the galaxy, but i could get all the percentages. When i adress the label with the calulated value, i only get the percentage of the top agent, but i dont know how to extract the other percentages. And even then, i still need some sort of random generator.

Super User

Here's a bit of a brute force way of doing it: create the collection of agents' names that is weighted to the ones of higher probability. For example, let's use your percentages of Agent 1 (25.89%), Agent 2 (18.24%), Agent 3 (26.76%), Agent 4 (29.09%). Populate a collection of 1000 records, 259 of which are for Agent 1, 182 for Agent 2, 268 for Agent 3, and 291 for Agent 4. Then shuffle and pull the first record out of that collection.

To build a loop that can put specific numbers of entries into a collection, check out this post. You build a loop index collection of values from 1 to 1000 and then use a

``ForAll(Filter(Loop,Index<= varLoop) // varLoop is the number of times you need to loop``

statement to control a Collect function. The post includes a text file you can download to make life easier.

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Frequent Visitor

Thanks for your suggestion. But here is the thing, those percentages change at least daily, and even every time when some agent is picked. And i needed to do it for every postcode, there are over 8000 in my country, so sadly not a possible solution.

But what i am getting from here, that there is no really good way to do it, i guess..

Super User

@Tobias410,

You can adapt this routine for 8000 postcodes by loading those into another table and using a ForAll loop to go through those one at a time. Very possible, and your machine might get the results more quickly than you think. Build yourself a little flowchart of how to calculate the first few and you'll be able to map this to a few lines of code.

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