Ahh, the ubiquitous ‘Error: could not find function’ error that you will regularly encounter when writing code in R programming. It was actually ranked the most common “class” of R error message inthis study. This output is generally the result of one of the following issues with the s...
To compensate for the loss of benefits caused by the decline of physical function, some workers will choose to transfer the land out. Such a choice can not only allow them to obtain certain land rents and other job opportunities, but also provides more land resources and business space for ...