Hello, I'm trying to find an optimal solution for a problem I'm having. I'm looking for 3D solution. I'm trying to convert a Point from world coordinates to the local coordinates of a specific Object, so that when the Object rotates/changes position, I would still be able to find new coordinate for the Point, that would be have the same relation (position/rotation) to the Object as during the initial state. I have the Forward, Right, Up vector of this Object; its position in world coordinates as well as the position of the Point in world coordinates. I was thinking I could get the difference in angles between the vector from Object's origin to Point's origin and the Forward vector of the Object, and then rotate by this difference from the Forward vector backwards to get the direction of the desired vector, but that is unreliable. So I'm assuming I will have to use some transformation Matrix for this. What are the maths for my exact situation, where I'd be using a custom axis (the Forward vector of my object) and to do the conversion from world to local coordinates? ... View more

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Dear All,        I am quite a new user using SAS software. Please give me some suggestion base on the scenario below:    1. I have time series data for almost 2 years, which records the date and the amount of money that earn daily but in this case user record the data only weekdays (data for sat and sun is empty).  2. Base on the data i have, i try to identified, include dummy variables,  estimate and got the satisfied model to do forecasting. This also include the cosscorr pamarameter. 3. However, when i try to run forecasting  by using    proc arima data=data ; identify var=money crosscorr=(Monday Tuesday Thursday Friday ); estimate input=(Monday Tuesday Thursday Friday ) p= (0) (21) q= (1) (0); forecast lead=30 interval=day id=date out=results; run;   i got an error "The value for option LEAD= has been reduced to 0." and the results that i got is generate only for the trained variable. The lead forecasting is not generate for me. I am not sure the forecast syntax is working with my data struture or not.    Please feel free to leave some comments on this or please share some ideas how can i solve this issue.    Regards, santisouk  ... View more

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Hello, I am getting the following error messages when trying to merge two datasets. One of the datasets I am getting from a csv file, so maybe the issue could be there? I was trying to specify the length of the PID variable for the redcap_sort dataset from the redcap one, which is the one we got from the csv file. However, I keep getting messages that the variable has multiple lengths and it keeps truncating the data.   Any PID after 999 gets shortened. So 1000 and 1001 become 100, 1010 becomes 101, etc.   Any help or a nudge in the right direction would be greatly appreciated, thank you so much.   Edit: The programming with the csv file already has: data work.redcap; %let _EFIERR_ = 0; infile &csv_file delimiter = ',' MISSOVER DSD lrecl=32767 firstobs=1 ; informat pid $500. ; informat pid_ini $500. ; and the code for format: format pid $500. ; It has this for all the variables. I thought the above code would make it so that the variables would have that limit of 500 characters?  ... View more