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Mastering Development

R: y-axis disappears when using coord_trans

Data: structure(list(Doy = c(1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L), Greenup = c(108, NA, 107, NA, 108, 108, NA, 108, NA, 108, […]

Categories
Linux Mastering Development

Output from Bonnie++ doesn’t match up

I just ran bonnie++ ten times to test the performance of a file server. After removing the verbose output this is what remains: format_version,bonnie_version,name,concurrency,seed,file_size,io_chunk_size,putc,putc_cpu,put_block,put_block_cpu,rewrite,rewrite_cpu,getc,getc_cpu,get_block,get_block_cpu,seeks,seeks_cpu,num_files,max_size,min_size,num_dirs,file_chunk_size,seq_create,seq_create_cpu,seq_stat,seq_stat_cpu,seq_del,seq_del_cpu,ran_create,ran_create_cpu,ran_stat,ran_stat_cpu,ran_del,ran_del_cpu,putc_latency,put_block_latency,rewrite_latency,getc_latency,get_block_latency,seeks_latency,seq_create_latency,seq_stat_latency,seq_del_latency,ran_create_latency,ran_stat_latency,ran_del_latency 1.98,1.98,15.local,1,1602631781,8G,,8192,5,901,93,45205,13,23092,10,1162,90,66262,8,369.7,16,1,,,,100,18,1,360,4,21,0,18,1,542,4,20,0,12295us,665ms,1903ms,48384us,1944ms,5397ms,1652ms,13917us,2866ms,507ms,4953us,803ms 1.98,1.98,15.local,1,1602631781,8G,,8192,5,891,93,46620,14,23701,10,1177,90,66461,8,674.0,15,1,,,,100,18,1,406,4,22,0,18,1,559,4,23,0,12010us,1415ms,1264ms,52618us,496ms,69643us,1267ms,10064us,515ms,958ms,4650us,829ms 1.98,1.98,15.local,1,1602631781,8G,,8192,5,909,93,47824,14,21431,9,1147,88,67050,8,754.3,17,1,,,,100,20,1,400,4,19,0,14,1,530,3,20,0,11888us,1177ms,2710ms,45197us,1021ms,127ms,398ms,4562us,2874ms,1317ms,4810us,1006ms 1.98,1.98,15.local,1,1602631781,8G,,8192,5,890,91,37540,12,21765,9,1183,90,66822,8,1419,22,1,,,,100,19,1,461,3,23,0,19,1,547,3,19,0,11992us,548ms,864ms,46664us,480ms,25566us,760ms,44844us,1036ms,704ms,4778us,6449ms 1.98,1.98,15.local,1,1602631781,8G,,8192,5,795,83,43425,13,23066,10,1218,93,938042,27,1282,17,1,,,,100,19,1,406,4,21,0,18,1,560,4,23,0,53141us,14308ms,2786ms,39855us,71572us,6216ms,1761ms,6592us,1224ms,511ms,4654us,504ms 1.98,1.98,15.local,1,1602631781,8G,,8192,5,870,91,37339,11,21559,9,1187,91,924835,26,1499,19,1,,,,100,20,1,401,5,25,1,19,1,545,4,20,0,11615us,907ms,1870ms,44530us,352ms,1694us,626ms,4660us,359ms,659ms,5166us,972ms 1.98,1.98,15.local,1,1602631781,8G,,8192,5,881,93,37399,11,22194,9,1199,92,66756,8,1341,21,1,,,,100,17,1,409,4,20,0,17,1,557,4,23,0,11831us,1334ms,1113ms,45929us,579ms,29992us,4185ms,4348us,985ms,521ms,4889us,442ms 1.98,1.98,15.local,1,1602631781,8G,,8192,5,879,92,37592,12,21603,9,1208,93,4320730,99,1485,18,1,,,,100,17,1,403,4,22,0,16,1,570,3,19,0,11683us,665ms,1118ms,23421us,158us,5495ms,1623ms,4401us,592ms,863ms,10107us,1072ms 1.98,1.98,15.local,1,1602631781,8G,,8192,5,879,92,37386,11,21728,9,1168,90,554500,18,1516,19,1,,,,100,19,1,410,4,25,1,18,1,553,3,27,1,11325us,1617ms,1546ms,42335us,476ms,1812us,681ms,4294us,357ms,870ms,4776us,261ms 1.98,1.98,15.local,1,1602631781,8G,,8192,5,850,92,37915,11,21600,9,1159,88,141678,10,1513,20,1,,,,100,20,1,403,5,22,0,16,1,604,3,22,0,12674us,1461ms,1496ms,62742us,382ms,123ms,786ms,5874us,690ms,956ms,5011us,795ms but pasting this into a spread sheet results in missing columns (there are two header columns fewer than there are data […]

Categories
Mastering Development

Fast way to remove array of specific row values from 2D numpy array

I have a 2D array like this: a = np.array([[25, 83, 18, 71], [75, 7, 0, 85], [25, 83, 18, 71], [25, 83, 18, 71], [75, 48, 8, 43], [ 7, 47, 96, 94], [ 7, 47, 96, 94], [56, 75, 50, 0], [19, 49, 92, 57], [52, 93, 58, 9]]) and I want to […]

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Mastering Development

Finding the shortest distance between clusters

I have 10 data points in a 2D array: array([[74, 89], [31, 55], [89, 74], [73, 20], [95, 35], [93, 82], [47, 81], [21, 83], [78, 54], [39, 45]]) I calculated their distance from each other using sklearn NearestNeighbors. I also clustered them into 5 clusters. My distance array looks like this: array([[ 0. , […]

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Mastering Development

Object.keys(myObject) returns an arbitrary list of numbers, not expected value

This is a bit of a head-scratcher – and has been a source of pain for the past 3 hours. Here’s my code. const payloadBody = JSON.parse(gatewayEvent.body); console.log(payloadBody); console.log(gatewayEvent.body); console.log(payloadBody.paymentMethodId); console.log(payloadBody[‘paymentMethodId’]); console.log(Object.keys(payloadBody)); If I look at the CloudWatch logs for this (I am executing in Lambda), the line console.log(payloadBody) logs: { "customerId": "cus_REDACTED", "paymentMethodId": "pm_REDACTED", […]

Categories
Cryptocurrency Ethereum Mastering Development

ethers.js wrong signature

From the same private key in ethers.js and secp256k1 I get the same eth address. But if I sign a message I get a different (wrong) signature in ethers.js. What is wrong with my code? import { createKeyPair, sign } from ‘@erebos/secp256k1’ import { pubKeyToAddress } from ‘@erebos/keccak256’ import { ethers, Wallet } from ‘ethers’; […]

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User Help

How to use FILTER function in excel to to exclude certain values?

First, this is becoming very difficult for me to explain, so please bear with me. I want to make it easier to calculate for a puzzle (killer sudokus basically). So I made an excel table for all possible permutations possible with 1 to 9, their sum, and their number of digits. Now I am trying […]

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Mastering Development

How can I keep track of total transaction amount received by an account each last 6 month?

This is my transaction data. It shows the transactions made from the accounts in from column to the accounts in to column with the date and the amount information data id from to date amount <int> <fctr> <fctr> <date> <dbl> 19521 6644 6934 2005-01-01 700.0 19524 6753 8456 2005-01-01 600.0 19523 9242 9333 2005-01-01 1000.0 […]

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Mastering Development

Efficient neighbourhood search in numpy ndarray instead of nested conditional for loops

Although there are many instances of the question: "What is the numpy alternative to nested for loops", I was unable to fins a suitable answer for my case. Here it goes: I have a 3D numpy array with "0" background and other integers as foreground. I would like to find and store the foreground voxels […]

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Mastering Development

when we reshape numpy array, how is the stride size inferred?

I have an 1×1024 1-d array (flattened image). To see the image, I want to reshape its size as 32×32. I can easily achieve this by doing x.reshape(-1,32) and it works as I intended. It doesn’t screw the image. It reads the 1d array with 32-width stride each time. Say this time, there are 4 […]