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QUESTION
I have a list of named vectors. I am trying to sum their values. But some of the names within a vector have reversed equivalents. For example, if I have some data that looks like this:
...ANSWER
Answered 2022-Mar-06 at 13:02This is tricky. I'd be interested to see a more elegant solution
QUESTION
Here's my example dataframe:
...ANSWER
Answered 2022-Mar-15 at 12:49Yes, you can do:
QUESTION
Assume I have the following raw dataframe composes of some students information:
...ANSWER
Answered 2022-Mar-13 at 15:03Use df.sort_values
to sort the dataframe, and then use np.split
to split the dataframe at the specified index(es):
QUESTION
I'm trying to setup a Google Kubernetes Engine cluster with GPU's in the nodes loosely following these instructions, because I'm programmatically deploying using the Python client.
For some reason I can create a cluster with a NodePool that contains GPU's
...But, the nodes in the NodePool don't have access to those GPUs.
I've already installed the NVIDIA DaemonSet with this yaml file: https://raw.githubusercontent.com/GoogleCloudPlatform/container-engine-accelerators/master/nvidia-driver-installer/cos/daemonset-preloaded.yaml
You can see that it's there in this image:
For some reason those 2 lines always seem to be in status "ContainerCreating" and "PodInitializing". They never flip green to status = "Running". How can I get the GPU's in the NodePool to become available in the node(s)?
Update:Based on comments I ran the following commands on the 2 NVIDIA pods; kubectl describe pod POD_NAME --namespace kube-system
.
To do this I opened the UI KUBECTL command terminal on the node. Then I ran the following commands:
gcloud container clusters get-credentials CLUSTER-NAME --zone ZONE --project PROJECT-NAME
Then, I called kubectl describe pod nvidia-gpu-device-plugin-UID --namespace kube-system
and got this output:
ANSWER
Answered 2022-Mar-03 at 08:30According the docker image that the container is trying to pull (gke-nvidia-installer:fixed
), it looks like you're trying use Ubuntu daemonset instead of cos
.
You should run kubectl apply -f https://raw.githubusercontent.com/GoogleCloudPlatform/container-engine-accelerators/master/nvidia-driver-installer/cos/daemonset-preloaded.yaml
This will apply the right daemonset for your cos
node pool, as stated here.
In addition, please verify your node pool has the https://www.googleapis.com/auth/devstorage.read_only
scope which is needed to pull the image. You can should see it in your node pool page in GCP Console, under Security -> Access scopes (The relevant service is Storage).
QUESTION
I am needing to figure out a bit-hack to find the first location where the bit-value changes. It could be from 0
to 1
or 1
to 0
.
ANSWER
Answered 2022-Feb-08 at 20:18The key building-block is a bit-scan like bsr
. (Or 31-lzcnt
).
That finds the position of the highest 1
bit, and we can transform your input to work for this.
If the leading bit is set, NOT it before bit-scan. Like x = ((int32_t)x<0) ? ~x : x;
with mov ecx, eax
/ xor eax, -1
(like NOT but sets FLAGS) / cmovns ecx, eax
. So like an absolute-value idiom, but with NOT instead of NEG . Another option is sar reg,31
(or cdq
) / xor
with that to flip or not.
QUESTION
I am currently trying to find a way to find unique column values in otherwise duplicate rows in a dataset.
My dataset has the following properties:
- The dataset's columns comprise an identifier variable (ID) and a large number of response variables (x1 - xn).
- Each row should represent one individual, meaning the values in the ID column should all be unique (and not repeated).
- Some rows are duplicated, with repeated entries in the ID column and seemingly identical response item values (x1 - xn). However, the dataset is too large to get a full overview over all variables.
As demonstrated in the code below, if rows are truly identical for all variables, then the duplicate row can be removed with the dplyr::distinct()
function. In my case, not all "duplicate" rows are removed by distinct()
, which can only mean that not all entries are identical.
I want to find a way to identify which entries are unique in these otherwise duplicate rows.
Example:
...ANSWER
Answered 2022-Jan-17 at 15:16If you just want to keep the first instance of each identifier:
QUESTION
I have a Piece of code that's supposed to change the text displayed according to the current day of the week and the time of day.
For some reason the if/else statements I'm using to check variables are altering the day variable. The end value changes from day do day and removing sections of if else statements also change the result.
I plan on embedding this on a WordPress site using the HTML block
...ANSWER
Answered 2022-Jan-19 at 09:33This is happening because you are assigning the value in the if check. instead of assigning it using =
, use ==
or ===
to check for equality
QUESTION
I have a sql table as follows,
...ANSWER
Answered 2022-Jan-12 at 07:07Group by is the right option for you. But you need to be careful. You can have different date values (in your case it's the same). In this case the script doesn't know which date to take. I used max, because you have only one value.
QUESTION
I have a nested list of lists which contains some data frames. However, the data frames can appear at any level in the list. What I want to end up with is a flat list, i.e. just one level, where each element is only the data frames, with all other things discarded.
I have come up with a solution for this, but it looks very clunky and I am sure there ought to be a more elegant solution.
Importantly, I'm looking for something in base R, that can extract data frames at any level inside the nested list. I have tried unlist()
and dabbled with rapply()
but somehow not found a satisfying solution.
Example code follows: an example list, what I am actually trying to achieve, and my own solution which I am not very happy with. Thanks for any help!
...ANSWER
Answered 2021-Dec-28 at 22:13Maybe consider a simple recursive function like this
QUESTION
I am trying to render a table on shinyapps.io, but it is populating with all NA's. I am scraping NCAA basketball spreads from https://www.vegasinsider.com/college-basketball/odds/las-vegas/. Locally, the table renders fine. But on shinyapps.io, all the numeric spreads display as NA's. It only displays correctly on shinyapps.io if all the spread values are characters. But then I cannot perform any math operations. As soon as the BetMGM, Caesers, FanDuel columns are numeric, they display with NA. I'll provide some code and data to help recreate the issue. There was a lot of data cleaning steps that I will skip for the sake of brevity.
@akrun here is the code to scrape the table. I do this and then some regex to split apart the game_info into components.
...ANSWER
Answered 2021-Dec-24 at 16:58It seems that the spread_table
after scraping may be post-processed in a way that couldn't convert the extracted substring into numeric
class - i.e. when we do as.numeric
, if there is any character, it may convert to NA
.
In the below code, select
the columns of interest after scraping, then extract
the substring from the 'game_info' column to split into
'date', 'time', 'away_team_name' and 'home_team_name' based on a regex pattern matching and capturing ((...)
) those groups that meet the criteria. (^(\\S+)
) - captures the first group as one or more non white spaces characters from the start (^
) of the string, followed by one or more white space (\\s+
), then capture characters that are not newline character (([^\n]+)
) followed by any character that is not letter ([^A-Za-z]+
), capture third groups as one or more characters not the newline followed by again the characters not a letter and capture the rest of the characters ((.*)
). Then loop across
the 'BetMGM' to 'FanDuel', extract the substring characters not having u
or -
and is followed by a space ((?=\\s)
), replace the substring fraction with + 0.5
(as there was only a single fraction), loop over the string and eval
utate the string
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