https://communities.sas.com/t5/SAS-Procedures/Converting-to-Higher-Frequency/m-p/33650#M8149 Thank you Scott Barry,<BR /> <BR /> I searched all the SAS support website, but it does not really help. It is still not clear as the examples given do not cover all the possible conversion methods.<BR /> For example how to convert ratios (A/B) to higher frequency?In this case usually there are 2 possibilities depending on wherther A and B are flows or stocks:<BR /> <BR /> <BR /> 1-A and B are flows<BR /> 2-A stock, B flow.<BR /> <BR /> I hope someone can help.<BR /> <BR /> Regards,<BR /> <BR /> Ismail Wed, 06 Jan 2010 04:24:35 GMT deleted_user 2010-01-06T04:24:35Z https://communities.sas.com/t5/SAS-Procedures/Converting-to-Higher-Frequency/m-p/33648#M8147 Dear All,<BR /> <BR /> This my first time in the forum and I thank you all for the support and help you are providing. I am an economist working with time series data. Many time series are only available at yearly basis and I need to convert them to monthly. I read the techical support however it is very confusing and sometimes not consistent. for example GDP is a flow not stock variable when reading the help menu it I noticed that in the examples given sometimes it uses OBSERVED=TOTAL and sometimes OBSERVED=AVERAGE. My question is which one I should use?<BR /> <BR /> For stock variables such as FOREIGN RESRVES I am not sure how to write the procedure.<BR /> 1-My first question is to help me with the procedure that should be used for converting flow variables and stock variables<BR /> 2-my second question is about ratios. For example if I have yearly BUDGET DEFICIT/GDP (RATIO). Can I just convert the ratio to monthly ratios or do I need to convert DEFICIT and GDP separately then find the monthly ratios?<BR /> <BR /> I am really stuck with this and is taking a lot of my time. I hope you can help so that I can move forward in my research.<BR /> <BR /> Regards,<BR /> <BR /> Ismail Tue, 22 Dec 2009 10:50:47 GMT https://communities.sas.com/t5/SAS-Procedures/Converting-to-Higher-Frequency/m-p/33648#M8147 deleted_user 2009-12-22T10:50:47Z https://communities.sas.com/t5/SAS-Procedures/Converting-to-Higher-Frequency/m-p/33649#M8148 Suggested Google advanced search argument - may help you find relevant material available on the SAS support <A href="http://support.sas.com/" target="_blank">http://support.sas.com/</A> website.<BR /> <BR /> <BR /> +"time series" +stock +"flow specification" site:sas.com<BR /> <BR /> <BR /> Scott Barry<BR /> SBBWorks, Inc. Mon, 04 Jan 2010 19:02:10 GMT https://communities.sas.com/t5/SAS-Procedures/Converting-to-Higher-Frequency/m-p/33649#M8148 sbb 2010-01-04T19:02:10Z https://communities.sas.com/t5/SAS-Procedures/Converting-to-Higher-Frequency/m-p/33650#M8149 Thank you Scott Barry,<BR /> <BR /> I searched all the SAS support website, but it does not really help. It is still not clear as the examples given do not cover all the possible conversion methods.<BR /> For example how to convert ratios (A/B) to higher frequency?In this case usually there are 2 possibilities depending on wherther A and B are flows or stocks:<BR /> <BR /> <BR /> 1-A and B are flows<BR /> 2-A stock, B flow.<BR /> <BR /> I hope someone can help.<BR /> <BR /> Regards,<BR /> <BR /> Ismail Wed, 06 Jan 2010 04:24:35 GMT https://communities.sas.com/t5/SAS-Procedures/Converting-to-Higher-Frequency/m-p/33650#M8149 deleted_user 2010-01-06T04:24:35Z