Hi,
sorry for this question, but how is it possible to remove a single point by a random function with a seed.
removepoint(0,rand(1234)) doesn't work. What must I do?
thanks.
VEX removepoint random / Random with percentage probabilities for different results
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- Christoph_H_
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- BabaJ
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- Christoph_H_
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thanks.
In this context, how could I best invert the random selection? So that's exactly what's left?
How can I also extend chance so that no selection is possible or even several?
I really try to do it alone, but I still lack so many techniques and experience.
In this context, how could I best invert the random selection? So that's exactly what's left?
How can I also extend chance so that no selection is possible or even several?
I really try to do it alone, but I still lack so many techniques and experience.
Edited by Christoph_H_ - April 15, 2018 13:34:49
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- jsmack
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If you frame it in terms of probability, instead of in terms of point number, you can get the outcomes of none/several. Also if you use a group instead of removing the points within the attrib vop evaluation, you can get a speed boost as well as easily invert the intention when applying the group to a blast sop.
for example:
Then either blast ptgrp or !ptgrp, depending on if you want to remove or keep the proportion specified by the probability.
for example:
float prob = chf('probability'); float seed = chf('seed'); float u = rand(set(@elemnum%65535, @elemnum/65535, seed)); @group_ptgrp = prob > u;
Then either blast ptgrp or !ptgrp, depending on if you want to remove or keep the proportion specified by the probability.
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- Christoph_H_
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Thank you very much for your help.
Unfortunately I still have problems for the following configuration:
I tried to use an If loop to add certain percentage probabilities.
I failed, however.
In this case:
a 20 percent probability that he does not select a point.
a 35 percent probability that he selects 2 points.
a 45% probability that he selects 4 points.
The whole thing would have to be subject to a random function with seed.
So far I have the impression that I would have to combine several random functions.
I have no idea how to do this. I also searched the Internet, but found nothing that would have helped me.
Thanks again for your help so far.
Unfortunately I still have problems for the following configuration:
I tried to use an If loop to add certain percentage probabilities.
I failed, however.
In this case:
a 20 percent probability that he does not select a point.
a 35 percent probability that he selects 2 points.
a 45% probability that he selects 4 points.
The whole thing would have to be subject to a random function with seed.
So far I have the impression that I would have to combine several random functions.
I have no idea how to do this. I also searched the Internet, but found nothing that would have helped me.
Thanks again for your help so far.
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