Ptyhon：如何在避免零的数组列表上计算均值和百分位数

如何解决Ptyhon：如何在避免零的数组列表上计算均值和百分位数

我正在处理 geotiff 文件格式的卫星图像。假设我有多个带有空格的图像（因为云或其他元素）。但是我正在将这些数组收集在列表中。

from Rasterio.plot import show
LST = [array1,array2]
f,ax=plt.subplots(1,2,figsize=[20,20])
show(lst_paris2,cmap='hot_r',vmin=vmin,ax=ax[0])
show(lst_paris3,vmin=vmin1,ax=ax[1])

我想计算，对于每个像素（即数组的单元格 i,j），mean 为 numpy.mean(LST)，percentiles 为 numpy.percentile(LIST,[5,50,95]) 避免零值。

解决方法

您可以使用带有布尔索引的 .nonzero() 方法

const Discord = require('discord.js');
const config = require('../config/config.json')

module.exports = {
    name: 'musichelp',aliases: ['mhelp'],description: "Shows you all the music commands!",async execute(client,message,args,Discord,cmd) {
        const musicEmbed = new Discord.MessageEmbed()

        .setColor('#8c88fc')
        .setTitle("Music Help")
        .addField(
            {name: "Play Command!",value: `${config.prefix}`+ "play \n **Aliases** = 'p' \n\n ***Description*** \n The play command plays music in a voice channel (You need to be in a vc to be able to use this command!)",inline: true},{name: "Leave Command!",value: `${config.prefix}`+ "leave \n **Aliases** = 'dc','disconnect' \n The leave command leaves the current voice channel it's in (You need to be in a vc to be able to use this command)",)

        .setFooter("It's recommended to set the volume of the bot to between 35 - 50!");

        await message.reply(musicEmbed);
    }
}

,

您的 container: { display: "flex",justifyContent: 'center',height: "100%",width: "100%",alignItems: "center",} 变量似乎是两个列表/数组的列表。如果您使用 LST 从这两个列表中创建一个 np.hstack 会有所帮助。然后你可以像@midtownguru 在评论中所说的那样进行计算。

np.array