R How to check for duplicate values in a column in a dataframe in R How to update fields in a dataframe in R Introduction to Data Science in R Part I How to read all files in a folder and merge them into one file in R survey to go Generating Random Directional Steps in SurveyToGO Generating Random Numbers in SurveyToGO XLSForms Digital questionnaires scripting pro tips XLSForms Authoring Tips and Tricks Improving performance of your XLSForm Getting rid of the NaN in XLSForms calculations. XLSForm Using text fields from a repeat group as choices in your XLSForm. Data Science Introduction to Data Science in R Part I SPSS SPSS Define new variables in empty data set SPSS working directory How to check to convert a string variable to numeric/categorical in SPSS Excel How to filter rows in Excel that have count greater than 1 ODK Digital questionnaires scripting pro tips SurveyToGo Digital questionnaires scripting pro tips SurveyCTO Digital questionnaires scripting pro tips
Jonathan Munene
Data Engineer
Lead Consultant - SwissPeaks East Africa [R, Shiny, Tableau, XLSForms, Stata,SPSS, ODK, SurveyToGo, Data Science & Machine Learning].