我正在尝试使用数据集的已排序列的索引.我想按一个排序列重新排序整个数据集.
area.sort<-sort(xsample$area1, index.return=TRUE)[2]
输出是一个列表,所以我不能在整个数据集中使用它索引.
Error in xj[i] : invalid subscript type 'list'
有人建议使用unlist但我无法摆脱ix*.有任何想法吗？谢谢
> area.sort<-unlist(area.sort)
ix1 ix2 ix3 ix4 ix5 ix6 ix7 ix8 ix9 ix10 ix11 ix12 ix13
45 96 92 80 53 54 24 21 63 81 40 66 64
如何控制 Kafka 生产者或消费者的控制台日志记录级别？我在 Scala 中使用 Kafka 0.9 API。
每次调用时send，KafkaProducer控制台都会给出如下输出。这是否表明我的设置不KafkaProducer正确，而不仅仅是日志记录过多的问题？
17:52:21.236 [pool-10-thread-7] INFO o.a.k.c.producer.ProducerConfig - ProducerConfig values:
compression.type = none
metric.reporters = []
metadata.max.age.ms = 300000
.
.
.
17:52:21.279 [pool-10-thread-7] DEBUG o.a.kafka.common.metrics.Metrics - Added sensor with name bufferpool-wait-time
17:52:21.280 [pool-10-thread-7] DEBUG o.a.kafka.common.metrics.Metrics - Added sensor with name buffer-exhausted-records
17:52:21.369 [pool-10-thread-7] DEBUG org.apache.kafka.clients.Metadata - Updated cluster metadata version 1 to Cluster(nodes = [Node(-1, localhost, 9092)], partitions = [])
17:52:21.369 [pool-10-thread-7] DEBUG o.a.kafka.common.metrics.Metrics - Added sensor …当我调用random.sample(arr,length)
错误返回时random_sample() takes at most 1 positional argument (2 given).经过一些谷歌搜索,我发现当我想调用随机模块的样本函数时,我正在调用Numpy的随机样本函数.我尝试用不同的名称导入numpy,这不能解决问题.不过,我需要Numpy来完成剩下的程序.
有什么想法吗？谢谢
I am attempting to transfer some old Video 8 tapes to my computer, though an EasyCap USB stick and the motherboard's sound line-in, on Ubuntu. I believe the arguments are correctly laid out below to capture from two independent streams, and encode them both into the output MP4 file.
Edit:
I can simplify the question a bit, now.
ALSA buffer overrun (or underrun?) is induced by the unreliable/noisy audio source. For instance, if ffmpeg captures the beginning of tape playback, …
我正在尝试使用 nix flakes 进行 android 开发。
这是我的 flake.nix：
{
description = "test";
outputs = { self, nixpkgs }: {
packages.x86_64-linux.hello = nixpkgs.legacyPackages.x86_64-linux.hello;
devShell.x86_64-linux = nixpkgs.legacyPackages.x86_64-linux.mkShell {
buildInputs = [
nixpkgs.legacyPackages.x86_64-linux.androidenv.androidPkgs_9_0.androidsdk
];
};
};
}
跑步nix develop给了我这样的信息：
You must accept the following licenses:
- android-sdk-license
by setting nixpkgs config option 'android_sdk.accept_license = true;'.
使用薄片时如何传递此选项nixpkgs？
如果我查看M1 计算机的haskell.nix flake 提供的输出，它会开始构建 ghc-8.8.4 等。
\n\xe2\x9d\xaf nix flake show github:input-output-hk/haskell.nix\ngithub:input-output-hk/haskell.nix/1b54ea01568299a0eda578ae9395e20d5c699ee1\n\xe2\x94\x9c\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80checks\n\xe2\x94\x82 \xe2\x94\x9c\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80aarch64-darwin\ntrace: haskell-nix.haskellLib.cleanGit: /nix/store/jmx2m0ldgrjq7p3gb4yyca47nvbvspfl-source does not seem to be a git repository,\nassuming it is a clean checkout.\ntrace: No index state specified for haskell-project, using the latest index state that we know about (2022-02-07T00:00:00Z)!\ntrace: No index state specified for haskell-project, using the latest index state that we know about (2022-02-07T00:00:00Z)!\ntrace: No index state specified for haskell-project, using the latest index state that we know about (2022-02-07T00:00:00Z)!\ntrace: WARNING: No materialized …我使用yesod init && cd lemonstand. 当我执行“cabal install”时，它会抛出错误，
Backjump limit reached (change with --max-backjumps).
然后我通过了一个选项max-backjumps，
cabal install --max-backjumps 100
我跟着reddit的对话，做了这个，
cabal install --max-backjumps 100 --reorder-goals
这些步骤都没有奏效。有什么线索吗？