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kandi X-RAY | 1974 Summary
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QUESTION
I have column in my dataset that looks like has the date in many different formats. Sometimes it only has the year and month, and other times only the year:
Date 1 January 1980 Oct-74 Oct-17 1980.0 -200 -50 8I want to extract only the year from this column. For dates which are in the format "mmm-yy", I want to assume they are between 1921 and 2020. So my above column should look like this:
Year 1980 1974 2017 1980 -200 -50 8How can I do this in Python? Any help would be appreciated.
...ANSWER
Answered 2022-Apr-10 at 04:22Try this:
QUESTION
I have a function/method written inside a class:
...ANSWER
Answered 2022-Mar-10 at 15:12Yes, because of the way eval
works, essentially, since you are implicitly passing a different object for locals
and globals
(since it just gets globals()
and locals()
), the expression is being evaluated as if it were in a class definition, which does not create an enclosing scope. The behavior is described in the docs:
If the locals dictionary is omitted it defaults to the globals dictionary. If both dictionaries are omitted, the expression is executed with the globals and locals in the environment where
eval()
is called.
and if to keep reading in the exec
docs:
Remember that at the module level, globals and locals are the same dictionary. If exec gets two separate objects as globals and locals, the code will be executed as if it were embedded in a class definition.
And class scopes don't create enclosing scopes, which is why you can't call methods without using self
.
Here is another way to reproduce:
QUESTION
I am using this intersection over union code to determine IOU from my predictions and targets:
...ANSWER
Answered 2022-Mar-10 at 14:17IoU
can't be represented like this, usually it is written with scalar code. Here you need to compare every frame from target set with every one from predictions, "torch.max()" don't work this way. Try express (or just copy from somewhere) scalar python
code for IoU, when it will work, you could try to optimize it with some tensor operations, if it is strongly required.
QUESTION
I'm in a bit unusual situation. There are seven different proteins stored in a single file according to their residues names. Each protein has different sequence length. Now I need to calculate the center of mass of each protein and generate a time series data.I know how to do with a single protein, but do not with multiple protein system. For single protein I can do something like this:
...ANSWER
Answered 2022-Mar-01 at 15:49I would load the system from the TPR file to maintain the bond information. Then MDAnalysis can determine fragments (namely, your proteins). Then loop over the fragments to determine the COM time series:
QUESTION
I'm working with a cross-country panel dataset.
I want to create a new variable (let's call it C1
) such that the variable for Argentina in 1999 reflects the average value of inf from the beginning of the sample till the previous year (i.e., 1998).
Likewise, C1 for Turkey in 1991 reflects the average of inf from the beginning of the sample till 1990. Note that the first year for which data is available might be different for each country.
I would like to ideally do this using dplyr
. Any suggestions or leads would be much appreciated.
Below is a snapshot of my data.
...ANSWER
Answered 2022-Mar-01 at 14:19Use cummean
. Since you're first value is NA, you can group_by
NA values and country, and apply the cummean
.
QUESTION
I've looked at several SO posts but I'm at the "beating head against tree" stage. I appreciate your time.
I have a dataframe (about 300 cases) with a text string; I simply want to scan a separate list of cities (7000 of them), and if city in the string matches the list, I want a new data frame column to be written with the matching city name.
My data:
...ANSWER
Answered 2022-Feb-23 at 17:10Is this what you're looking for?
QUESTION
I have a wide dataframe that looks like this:
...ANSWER
Answered 2022-Feb-17 at 19:22This works:
QUESTION
I made a rookie DIY design for a saree. I used the SVG's to place over another SVG for it. Which works fine, but need to be able to adjust the distance between replicated SVG's (both vertical and horizontal).
Here's how it looks now:
In the above picture, I was able to add an SVG(design) over another plain SVG(saree) and the replicates. But how do I manipulate the distance between them using CSS.
Here's the code in JSFiddle:
...ANSWER
Answered 2022-Feb-10 at 20:12In order to simplify the code I've made a few changes. I've put the lothus flower in a symbol. Inside the pattern I'm using the symbol with . Since the symbol has a viewBox you can resize it as you need. In this case I'm using
width="37.7" height="22.9"
. Please observe that I'm keeping the same aspect ratio. (symbol's viewBox="150 110 3770 2290")
Also the pattern has a width="37.7" height="22.9". In this case I'm using the same width and height as the use element and the lothus flowers are apearing one next to each other.
QUESTION
Subsequences functions give interesting results with the seqefsub function. I work on sequences composed of geographical locations. Is there a way to know whether the subsequence listed is a complete subsequence.
I provide an example.
...ANSWER
Answered 2022-Feb-03 at 08:28From what I understand, what you call "complete subsequences" are the sequences of distinct successive states.
The distinct successive states are obtained from the state sequences with seqdss
, and the frequencies of the sequences with seqtab
. So, we get frequencies of what you call "complete subsequences" with:
QUESTION
I have the dataframe below and I would like to add 3 new columns. The first column will be named years_5
and it will contain values like "1951-1955"
,"1955-1959"
etc. After finding the minimum value of the column year
the plus 5 years will start from this value. Here the minimum year is 1951
. The second column will be named Scope_min
and will contain the minimum scope value for the relative years_5
cell and the third column will be named Scope_max
and will contain the maximum scope value for the relative years_5
cell. For example the first row will be like:
ANSWER
Answered 2022-Feb-02 at 21:44Initially, I arranged the data by year. In your sample data it already is, but that may not be the case in your real data. Next, I cut
the groups into five-year chunks. I left an exception for the last group (could be less than five years).
Then I created the new variables, fiveYears
, Scope_min
, and Scope_max
. Lastly, unnesting, so that you have all the data and the group-based information.
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