I put in my model with assumptions, decisions, and a forecast. It runs alright in Crystal Ball. But when I fire up OptQuest, it repeatedly gives me the error...
Dear Eric, Here are some steps to try to get OptQuest running on your machine: (1) Make sure that you have the following versions of later of the following ...
Thank you for your help, David. I uninstalled and reinstalled, and now it works. Eric Johnson ________________________________ From: cbug2@yahoogroups.com...
I just upgraded to CB7.1 from 5.5. Unlike 5.5, 7.1 apparently does not restore cells to their original values at the end of a simulation run (it apparently...
I am using CB 7.1 and my starting values are restored at the end of each simulation run. I don't remember specifically setting this, so I'm not sure if it's a...
My experience with CB7.1 has been just the opposite. When the simulation completes running, the values in the assumptions cells are restored to the original...
Hi Marcelo, The answer depends on which version of Crystal Ball you have. For the rest of the CBUC group, a General distribution is a continuous distribution...
Huybert, Many thanks for your help. My version is the 5.2.2 and it worked as suggested. I also thank for the suggestion about ModelAssist for Crystal Ball....
Hello, I would like to make a fairly simple simulation of how the value of a portfolio with different assets (stocks, bonds, etc) develops over a given number...
Bo, what you are looking for are so-called heavy-tailed distributions. The Pareto distribution is one such distribution. If you search online for stock market...
Hello, I am a beginner of Crystal Ball and OptQuest. Please, help me. I have two questions. First, I have 3 forecast variables (A, B, C): The first (A) is to ...
Hello, I am using Crystal Ball 5.5. When I try to use a correlation between two variables, I get funny results. To test the correlation function I use the same...
Everybody, If you've visited the CB site recently you will have noticed that they've just issued a new version in the 7.x series... 7.1.2 to be exact. It...
Hello, Bo, When Crystal Ball establishes a correlation between two variables, it is really a rank correlation. A perfect positive (rank) correlation of 1.0...
Hi, ... Except for some extreme cases, like the one you mentioned, there is no unambiguous way of deducing the conjoint distribution function of two random...
I'm using the latest version of CB, and I've created a custom distribution of only 3 values with 3 probabilities associated with them (none of the values are...
Does anybody knows why the functions "CB.GetForeStat", "CB.GetForePercent" and "CB.GetCertainty" are so unstable?. I have a model where they just return values...
Terry, After the simulation is run the cells will revert to whatever was entered before the simulation started - this will happen even if they contain a number...
OptQuest has its own optmization search strategy - which sometimes not fitting my needs. Occassionally, I would like to have OptQuest (instead of running,...
Okay, first of all, "unstable" is probably not the word you are looking for as that implies causes crashes, has different results for the same circumstance, or...
Many thanks for your comments Bill. I've checked all your suggestions and everything seems to be ok. When the cells do not return a value they return: #VALUE! ...
When using CB.GetForeStatFN, you must copy/paste or otherwise save the results immediately after a simulation run. After the simulation is reset, the results...
Hi, ... You should check, whether your simulation model contains equations which can be provided with inadmissible inputs depending on the realizations of the...
With OptQuest, the constraints must be linear. This restricts multiplication of a variable to just constants, not other variables. - Julie ... not be ... it...
Greetings, I was told by Steve Hoye to come here in order to get in touch with other CB users (most of which are more proficient than I). I'm working on a...
Daniel, Yes, I'm sure there are several of us that can help. I teach this topic in our CB classes and in a risk analysis for development and production classes...
Daniel, Assuming we are talking about a "conventional " oil or gas well here (not CBM or some sort of tertiary recovery ) , my suggestion would be to build ...
Bill, First, thank you very much for the quick reply. I know that my question was somewhat vague, and I appreciate you attempting to work through it, despite...
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