Error_Checking_Imported_Data

The SAS command file checks EPG data for errors. It will always run. However, you will only get the correct output if there are no errors. The data sets \"simple psyllid\" and \"simple aphid\" have no errors. Errorchecker will return two tables. The first is a record of the waveforms. Check to make sure that all waveforms are correct. A number of common errors will show here. PLEASE note that Np is a different waveform from NP or nP or np. Also, \"NP\" is different from \" NP\" and \"NP \" or \" NP \". I wrote the code to be insensitive to these conditions using the condense() function to eliminate spaces and the upcase() function to make all letters capitals. However, it is safer to correct the problem rather than relying on the program. The second table is a frequency table showing all the transitions and transitional probabilities. Check to make sure that all transitions are possible. Your data is clean if you get these two tables and there are no problems evident in the tables.