On april 23, 2014, statalist moved from an email list to a forum, based at. However, it matters quite a bit for a code like 038. Based on your input, get a random alpha numeric string. I have two variables in stata, both numeric variables that have somehow been recorded as string variables. All the locals created are indexed by a sequential identi er which allows users to manage. Roger newson statistical software components from boston college department of economics. It is useful for converting numbers to text for insertion in graph or table titles, captions, or labels. The variable country is string and the order of countries is also different, which means that if i destring it, it would not match dataset1 neither. For converting metric string variables holding just numbers into numeric variables, see spss convert string to numeric variable. It is usually possible to adjust the numeric date or datetime values to the sentinel date and units that stata uses. For example, suppose a numeric variable gnp has a value of 12345678. If you have a string variable and want to convert it to a numeric variable, you can use the encode command. My variable named dealvalue has 72914 observations. Stata is a complete, integrated statistical software package created by statacorp lp.
To be able to perform any mathematical operations, your variables need to be in a numeric format. Worldwriter does have conversion capability and i rarely use ww so i dont recall if you want decimal, digits, or something else. Preserving numerical format after string transformation. This function is used to display a number in the given format. Reed college stata help changing string variables to. Convert between datetime arrays, numbers, and text. Some of them are missing, some have the value 1 and the rest of them are usually a very big number like 3,834,848. This module may be installed from within stata by typing ssc install sdecode. Hi, does any one know of a solution to stop excel converting string values such as 001 to a numeric field of 1.
The first tabulate looks identical to the tabulate done on the string variable region above. And you use a numeric format in the string function, to select what string. If you have a string variable that has only numbers in. String variables defined with a width of 80 characters the intercooled stata limit or 244. It provides a wide range of statistical analysis, data management, and graphics. However, the other 3 variables contain system missings so we. Converting numeric to string statalist the stata forum. The latest versions of stata added many new features, including a long string data type allowing one to store along with numerical and categorical data, documents up. So technically, the source right now is string and the destination is numeric18,2. How can i quickly convert many string variables to numeric. The following examples show how to use these rules to convert from characternumeric or numericcharacter. Also, the replace option of tostring doesnt take other parameters.
With this utility you generate a 16 character output based on your input of numbers and upper and lower case letters. Hello, you can save the file as csv in excel, then open it in spss. Conversion of string to numeric it wouild be helpful if you would explain the context of what you are trying to do. How do i convert my icd9 codes from a string type to a numeric type. Convert dta file to exceldownload free software programs online. Fortunately, stata offers some easy ways for converting string to numeric variables and vice versa. Wordstat combines natural language processing, content analysis and statistical techniques to quickly extract topics, patterns and relationships in large amount of text. Written and illustrated tutorials for the statistical software spss. In stata, how do i display numeric values with commas inserted. From there what you do depends on how you want the data to be displayed. How to convert char to numeric sas support communities. Any variable in stata s numeric format begins with a % sign.
The dataset has 435 observations in all, and spss reports that there are zero missing values. Hi statalist, i am facing a problem with destring a variable. Stata is reading in my variables as string instead of numeric. Sep 08, 2016 this is an example of a spreadsheet from excel. In a case where your string variables are in fact strings e. One method of converting numbers stored as strings into numerical variables is to use a string function called real that translates numeric values stored as strings into numeric values stata can recognize as such. I suspect you want to do this but without seeing your variable names its just guesswork. Stata module to replace string date variables with numeric date variables with the same names. Suppose you have a 6digit numeric observation id, code, where the first 2 digits represent geographic code and the last 4 digits represent unique observation codes, and you want to generate a new variable, reg, that represents the 2digit geographic code.
This function is used to find the nth position of the given word in. This function is used to find the length of a word. Converting numeric into string using the value labels. How do i convert string variables to numeric variables in. I have tried to tostring the variable country in the dataset1, but it tells me. A put converts character variable to another character variable. This example uses put function to convert numeric data to character data. How can i convert string variables to numeric variables in.
Stata module to decode a numeric variable into a string variable. With convert keyword, you can convert a variable type from string to numeric. So technically, the source right now is string and the destination is numeric 18,2. To insert commas into the numeric value, use this command. Stata module to decode a numeric variable into a string. If you create a frequency table of this variable analyze descriptive statistics frequencies, you will notice something strange. Sep 01, 2010 here is one example where you need to preserve the numerical format for strings. The output string variable may either replace the input. The random string generator creates a series of numbers and letters that have no pattern. Notice, if it matters to you that this does not convert a numeric variable to a string variable. Any variable in statas numeric format begins with a % sign. Numbers in stata can take a variety of interesting formats, including negative values, decimals and positive and negative scienfitic notation e. Converting string to numeric data in spss will make you lose any data other than numbers.
Spss how to convert string variables into numeric ones. A very basic question i would appreciate help with. In stata, how do i display numeric values with commas. How do i convert string variables to numeric variables in stata. Looking at rows 4 and 5, we see that the leading zeros are stripped from the string during the stringtonumeric conversion of dx, meaning that we lost the distinction between a 3digit and a 4digit code. I need them converted to numeric variables so that i can generate a new variable with them. The great divide among data types in stata is between numeric and. When i tried, it said type mismatch i have tried the real and the encode commands, none of.
With into keyword, you can recode values of a variable into a new variable numeric conversion into the same variable recode code convert into numcode. Date prev date next thread prev thread next date index thread index. How can i quickly convert many string variables to numeric variables. For example, if string cell value is s1 it will be lost if converting it to numeric regards. The string numeric string conversion resulted in missing information for 66 observations. For a given row, columns are added to the local recursively, separated by a space. Below are conversion rules for sas, spss, r, excel, and open office. As summarised at the top of this output the five unavoidable sources of loss are. Here is one example where you need to preserve the numerical format for strings. Wordstat for stata was created to allow stata and stata 15 users running under windows, to apply text analytics techniques on any string variables stored in a stata data file. Converting numeric variables to character variables ciser. Unlike mata, stata does not allow users to create matrices containing string values. In the example above, a8 indicates a string variable eight.
Since the default variable type in spss is numeric, you need to define your string variable in advance. Stata can store numbers with differing levels of precision, as described in the table below. Precisely, well flag non empty string values that are system missing after the conversion. However, two records have incorrect diagnoses that appear to be legitimate. An example of when one might need to do this is if they needed to append. Truncation and potential truncation of data andor labels 1. In spss, recoding categorical string variables to numeric codes and converting blank strings to missing values can be done automatically using automatic recode.
However, in many situations it is better to convert only character columns to numeric i. As you can see from the second tabulate, region2 has the numeric values 1 through 4 but retains the strings central, east, south and west as value labels. To determine whether a string is a valid representation of a specified numeric type, use the static tryparse method that is implemented by all primitive numeric types and also by types such as datetime and ipaddress. Statistical software components from boston college department of economics. Stata module to decode a numeric variable into a string variable, statistical software components s417702, boston college department of economics, revised 30 sep 20. In spss, how do i convert between numeric variables and.
So how do we know if a variable is string or numeric. The following document provides an example of how to create. Ive tried several combinations to try and fix the issue including adding a dummy row with values of 000 dummy and this works for the active row but not for subsequent rows. Wordstat for stata content analysis and text mining tool. Watch how to convert a string variable to a numeric variable. May 01, 2015 the following examples show how to use these rules to convert from character numeric or numeric character. How to convert string into numeric form in spss without. The conversion also resulted in 1,048 incorrect codes, of which 1,046 are undefined codes.
Use a numeric informat as this will allow you to read a string and translate it into a numeric value. This is an example of how to change a numeric variable, id, to character variable. The first line of syntax reads in the dataset shown above. As these are at least suspicious, well call those conversion failures. The module is made available under terms of the gpl v3. Jul, 2017 convert variables from string to numeric in stata earnings management data. Jan 05, 2011 it is usually possible to adjust the numeric date or datetime values to the sentinel date and units that stata uses. Sas stores dates as the number of days since 01jan1960, the same as stata gen statadate sasdate. Sep 27, 2016 convert variables from string to numeric in stata duration. C put converts character variable with a user defined format to another character variable. If you have a string variable that has only numbers in it, then you can alternatively use the real function.
Even though stata can handly string variables, it is clear in many respects that numeric variables are much preferred. The informat tells sas how to read the data, and it should be read as numeric. But today i found a more convenient way of splitting numbers by using nsplit dan blanchette. Convert character to numeric in r example for string. Check that the columns dont contain any unintended characters. Running this command will cause stata to make a new numeric categorical variable wherein the data has labels that correspond to the old string values. The put function writes values with a specified format. B put converts numeric variable to a character variable with numeric value. In spss, to convert a numeric variable to a string variable, use the string function. Some users of excel or similar programs get in the habit of putting several lines of. Not least, most statistical procedures just do not accept string variables.
We recommend that practitioners store each row of a string matrix in a separate local. The output string variable may either replace the input numeric variable or be generated as. The following document provides an example of how to. Data conversion string to numeric solutions experts. In the sample data file, the variable state is a string variable representing whether the student is an instate student or an outofstate student. Since weve 480 cases in our data, were done for s1. How to convert multiple string varibles into numeric in spss.
Official stata provides the utilities encode and decode for conversion between string variables and numeric variables with value labels, and the utilities destring and tostring for conversion. Ditto for 4byte and 8byte numerics the string length and the number of leading spaces is dictated by the length of the maximum numeric value that it can hold. The following conventions must be followed for stata to read your. Excel converts string to numeric sas support communities. The example dataset, hsbs, is a subset of the high school and beyond data file with all of the variables as string variables. When i tried, it said type mismatch i have tried the real and the encode commands, none of which are working. In spss versions 24 and higher, tiny icons in front of variable names tell us the variable type, format and even measurement level. Odd numbers of characters in string variables were soon allowed in stata 2. How to convert char to numeric posted 01062017 2732 views in reply to pritam26 not sure why you have to recode your variables this way but to answer your question. How to determine whether a string represents a numeric value. Convert between datetime arrays, numbers, and text overview. I need help with changing a variable from numeric to string.
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