‘g++’ is not recognized as an internal or external command, operable program or batch file
Try to set g++ to your system path. You can refer to this: http://stephencoakley.com/2015/01/21/guide-setting-up-a-simple-c-development-environment-on-windows
Error: Expression must have integral or unscoped enum type
Your variable size is declared as: float size; You can’t use a floating point variable as the size of an array – it needs to be an integer value. You could cast it to convert to an integer: Your other problem is likely because you’re writing outside of the bounds of the array: Arrays are … Read more
How should I tackle –secure-file-priv in MySQL?
It’s working as intended. Your MySQL server has been started with –secure-file-priv option which basically limits from which directories you can load files using LOAD DATA INFILE. You may use SHOW VARIABLES LIKE “secure_file_priv”; to see the directory that has been configured. You have two options: Move your file to the directory specified by secure-file-priv. … Read more
Access denied for user ‘root@localhost’ (using password:NO)
You can reset your root password. Have in mind that it is not advisable to use root without password.
How to avoid “RuntimeError: dictionary changed size during iteration” error?
In Python 3.x and 2.x you can use use list to force a copy of the keys to be made: In Python 2.x calling keys made a copy of the keys that you could iterate over while modifying the dict: But note that in Python 3.x this second method doesn’t help with your error because … Read more
Importing modules from parent folder
It seems that the problem is not related to the module being in a parent directory or anything like that. You need to add the directory that contains ptdraft to PYTHONPATH You said that import nib worked with you, that probably means that you added ptdraft itself (not its parent) to PYTHONPATH.
What are the “standard unambiguous date” formats for string-to-date conversion in R?
This is documented behavior. From ?as.Date: format: A character string. If not specified, it will try ‘”%Y-%m-%d”‘ then ‘”%Y/%m/%d”‘ on the first non-‘NA’ element, and give an error if neither works. as.Date(“01 Jan 2000”) yields an error because the format isn’t one of the two listed above. as.Date(“01/01/2000”) yields an incorrect answer because the date … Read more
‘x’ and ‘y’ lengths differ ERROR when plotting
From the code you provided, Vehic_vol is not a column of VehicleData. If you enter in it returns Note that NULL and VehicleData$CITY_MPG have different lengths (use length() to verify that). Try this instead or
ValueError: Length of values does not match length of index | Pandas DataFrame.unique()
The error comes up when you are trying to assign a list of numpy array of different length to a data frame, and it can be reproduced as follows: A data frame of four rows: Now trying to assign a list/array of two elements to it: Both errors out: ValueError: Length of values does not … Read more
mean() warning: argument is not numeric or logical: returning NA
From R 3.0.0 onwards mean(<data.frame>) is defunct (and passing a data.frame to mean will give the error you state) A data frame is a list of variables of the same number of rows with unique row names, given class “data.frame”. In your case, result has two variables (if your description is correct) . You could … Read more