A sentinel is a loop exit value or list delimiter whose value is outside the range of valid input, such as -1 for a zero-based array index, or ~ for alphabetic strings.
Questions tagged [sentinel]
410 questions
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Redis sentinel slave error link state on slave
I try to make replication using redis sentinel, on dev server wiht redis 3 all stuff works fine, but on production when i use redis 5 I had problem. First think i start to replicate using replicaof in config slave, then I configure sentinel
sentinel…
zakuzaku
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How to Configure Airflow Celery executor with redis sentinel?
Redis sentinel setup is done.
what all changes i have to do to point my celery backend to redis-sentinel?
i am using redis as a broker for celery executor.
Sathish Kumar
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PHP7/Laravel - Declaration of, Should be compatible with
Currently facing an issue with an old Laravel project I am trying to revive and update.
The error we're receiving is being thrown on line 11 inside of MessagesController like so:…
Joshua Newell
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Satellite image analysis using sentinel in python
I am trying to download the map of certain region using Sentinal. I am using "BANDS-S2-L1C" to authenticate. When i try running an algorithm to fetch the data of the region, it is throwing "Server response: "Layer BANDS-S2-L1C not found"
"Can…
Nayak
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Plotting geotiff in matlab with pcolor
I would like to use a scheme like this to plot satellite imagery. I'm soliciting ideas surrounding data types and scaling.
`ffn' is a .tiff, a proper geoTiff wit good metadata which looks like:
Filename:…
John Chris
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How best can a Sentinel Value be established when the full range of input is possible?
When parsing a file I need to detect whether an item with minimum and maximum occurrence of 1 has been processed already. Later on in validation I need to detect if it was not processed at all.
I can do this inelegantly with a count variable that…
user10530562
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Is it safe to use 'undefined' as sentinel in a Javascript while loop?
Is it safe to use this kind of loop in Javascript?
denseArray = [1,2,3,4,5, '...', 99999]
var x, i = 0
while (x = denseArray[i++]) {
document.write(x + '
') console.log(x) } document.write('Used sentinel: ' +…
') console.log(x) } document.write('Used sentinel: ' +…
user985399
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Trying to filter sentinel 2 images by percent cloud cover
I am trying to filter Sentinel 2 images by percent of cloud cover (say, 20%) and then perform some image arithmetic on the output.
I am trying to do implement what is found here:gis.stackexchange thread…
FreyGeospatial
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c++ Sentinel loop, store lowest and biggest number
here is my program:
#include
using namespace std;
int main(){
int num;
int numtotal = 0;
int numcount = 0;
int big = 0;
int low = 0;
cout<<"enter number or 0 to exit"<>num;
while(num != 0){
…
Sirius 26
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servicestack.redis can not visit sentinel
How is the sentry's password accessed？Why can't I visit my sentinel？
I've tested my sentinels are accessible from the command line.
I have changed the account password in the picture, which is not real. Just a sample.
Simon
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2 answers
Sentinel values with while loop
The program I'm writing is to use a given formula to calculate financial assistance for families that loops back and asks the user if they want to do it for another family. Part of the instructs was also to use -1 as a sentinel value for the input.…
OzzyPyro
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How to properly use sentinel nodes?
There will be multiple (closely) related questions instead of a single one. For our comfort, I will number them accordingly.
Based on this Wikipedia article, this question and lectures, I think I already understand the idea behind sentinel nodes and…
Sandwich
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Add activation for each seeded User in Sentinel (Laravel)
Using Laravel's database seeding I'm adding 10 random users, when I try to log in with these users Sentinel gives me an error that the account has to be activated first, what I want to do now is to (when I'm seeding) make an activation for each…
sebas2201
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Redis Client not connecting to Redis server via HAProxy
I'm facing an issue while connecting to Redis server via HAProxy using Jedis as a redis client.
Everything works fine when Redis server is directly connected to but, the same is not working via HAProxy. Both HAProxy and Redis services are running on…
Sandeep Singh
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sentinelsat package in OSGeo4W (qgis)
I intend to download automatically Sentinel images, in a QGIS plugin. I found sentinelsat package and I install it in my OSGeo4W installation. However When I test in command line (in this case OSGeo4W Shell) this gives me an…
Bárbara Duarte
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