label

问题 Extremely basic question, given the code: f_chi_squared <- function(x, r) { return ( (x^(r/2 - 1) * exp(1)^(-x/2)) / ( gamma(0.5*r) * 2^(r/2) ) ) } this_chi_squared <- function(x) { return (f_chi_squared(x, 2)) } plot(this_chi_squared) I do not get any numbers on the X and Y axis. I would like to have numbers on the x and y axis, and not have them blank like this. I am using Rstudio. The problem appears when I plot discrete points too. After adding dev.off I get Error in readChar(con, 5L,

问题 I am trying to remove these elements from the grid. I was able to delete all of them by writing out one by one. I then wrote a for loop to make it expandable, then I run into this error message. "employee.destroy() AttributeError: 'str' object has no attribute 'destroy'" This is part of a bigger program, but as much as I can reduce to the core problem, here is my code: import tkinter as tk from tkinter import ttk labelemployee={} class Application(ttk.Frame): #inherent from frame. def __init_

问题 So how i transfer my ViewController label: totalPar to ThirdViewController label: totalPar5. And I want to transfer data that I have added there with my minus and plus buttons Here is simulator pic that show what I want to transfer My ThirdViewController is almost same as ViewController except prepare segue Here is my ViewController import UIKit class ViewController: UIViewController { @IBOutlet weak var totalPar: UILabel! @IBOutlet weak var plusminusPar: UILabel! @IBOutlet weak var

问题 I am using Angular 2 for my project . I would like to know how to add label to the marker using angular google maps. I am not getting a solution to add a label using Angular 2. Below is my html code . I am retrieving the places using ngFor . I need to tag the name object to the marker . Basically , when i hover on a marker , it should show that name <div class="form-group"> <input placeholder="search for location" autocorrect="off" autocapitalize="off" spellcheck="off" type="text" class="form

问题 Ok so I wanna see if the user has in putted a single word among other words like for example I want the user to say hi, but not only the word hi! For example like this : Everybody this is XCoder, say hi class. I want an if command that will scan for the word hi and delete it if it is there and if it is not do nothing to the text. Summary : Scan for particular text, if exists substring it. or remove, I would most likely expecting or expecting a (if) statement more than anything else cause this

问题 I have a label on a splash screen that is displayed for 4 seconds. I am trying to make the label display the loading process as a percentage. Obviously, this is just to show the user that the program is actually starting up and not actually "loading" anything. Is there a way that I can have the label display the percentage (going from 1% to 100%) within 4 seconds? A bit lost on how to do this. 回答1: Put a Timer control on the form, and set its Interval property to 40 and its Enabled property

问题 Thanks to @Miraj50 that helped me with the .destroy() tkinter: how to write a for loop to destroy a list of labels? For the next stage, I am trying to destroy the labels in both tabs. I knew how to share the same list to different tabs, but I don't know how to "link" them to the tabs. With my limited knowledge I tried def remove(self, name): for name in tabs[name]: for employee in labelemployee: labelemployee[employee].destroy() and it gives me this error: TypeError: remove() missing 1

问题 I have a data set I filtered to the following (sample data): Name Time l 1 1.129 1G-d 1 0.113 1G-a 1 3.374 1B-b 1 3.367 1B-c 1 3.374 1B-d 2 3.355 1B-e 2 3.361 1B-a 3 1.129 1G-a I got this data after filtering the data frame and converting it to CSV file: # Assigns the new data frame to "df" with the data from only three columns header = ['Names','Time','l'] df = pd.DataFrame(df_2, columns = header) # Sorts the data frame by column "Names" as integers df.Names = df.Names.astype(int) df = df

问题 I want to label the axis on a plot dynamically. The labels come from a data frame and contain greek letters as well as super/sub scription. In a static case, where I would know the letters of my labels, bquote would work well. But in the case, where the label-string comes from a variable, bquote fails. This demonstrates what I want to achieve: a <- "alpha" b <- "beta" ggplot(data.frame(x=c(1), y=c(1)), aes(x, y)) + geom_point() + labs(x = bquote(.(a)[.(b)])) + ## will output the greek letters

问题 How do I fix this Lighthouse error: Form elements do not have associated labels <input type="text" id="s" name="s" value="Arama..." onfocus="if (this.value == 'Arama...') {this.value = '';}" onblur="if (this.value == '') {this.value = 'Arama...';}"> <select id="main-menu-mob"> <textarea id="comment" name="comment" cols="45" rows="8" maxlength="65525" required="required"></textarea> 回答1: For each of these you can add a label that references the element, or use the aria-labelledBy attribute. I