pdf

问题 I am trying to print out a PDF file, but I do not know how to specify the Page Format. I want to print all of my PDFs in A5 Format. Can someone please help me? # this code works and prints the PDF File, but not in the A5 Format import subprocess printer='MyPrinter' # name of the printer pdffile=r"C:\Desktop\pdf_test\pdfFile.pdf" # path to PDF acroread=r"C:\Program Files (x86)\Adobe\Acrobat 10.0\Acrobat\Acrobat.exe" # path to Acrobat Reader # print the file cmd='"%s" /N /T "%s" "%s"' %

问题 Given: Consider the density function $\phi$ defined on $\mathbb{R}$ for $a\in \mathbb{R}$ and $b \in \mathbb{R}_+^\star$ such that $\forall x \in \mathbb{R}$ , $$ \phi(x; a,b) = \frac{1}{\sqrt{2\pi b^2}}e^{-\frac{1}{2}\left(\frac{x-a}{b}\right)^2}. $$ Consider now the so-called Bart Simpson probability density function $f$ given by \begin{eqnarray} \label{eq:bart:1d:1} f(x) = \frac{1}{2}\phi(x; 0,1) + \frac{1}{10}\sum_{j=0}^4{\phi(x; (j/2)-1, 1/10)}. \end{eqnarray} Questions: Plot the pdf $f$

问题 Given: Consider the density function $\phi$ defined on $\mathbb{R}$ for $a\in \mathbb{R}$ and $b \in \mathbb{R}_+^\star$ such that $\forall x \in \mathbb{R}$ , $$ \phi(x; a,b) = \frac{1}{\sqrt{2\pi b^2}}e^{-\frac{1}{2}\left(\frac{x-a}{b}\right)^2}. $$ Consider now the so-called Bart Simpson probability density function $f$ given by \begin{eqnarray} \label{eq:bart:1d:1} f(x) = \frac{1}{2}\phi(x; 0,1) + \frac{1}{10}\sum_{j=0}^4{\phi(x; (j/2)-1, 1/10)}. \end{eqnarray} Questions: Plot the pdf $f$

问题 Given: Consider the density function $\phi$ defined on $\mathbb{R}$ for $a\in \mathbb{R}$ and $b \in \mathbb{R}_+^\star$ such that $\forall x \in \mathbb{R}$ , $$ \phi(x; a,b) = \frac{1}{\sqrt{2\pi b^2}}e^{-\frac{1}{2}\left(\frac{x-a}{b}\right)^2}. $$ Consider now the so-called Bart Simpson probability density function $f$ given by \begin{eqnarray} \label{eq:bart:1d:1} f(x) = \frac{1}{2}\phi(x; 0,1) + \frac{1}{10}\sum_{j=0}^4{\phi(x; (j/2)-1, 1/10)}. \end{eqnarray} Questions: Plot the pdf $f$

问题 I'm trying to save a website as PDF through printing dialog. My code allows me to save as pdf, but asks me to input a filename, which I don't know how to pass a filename to the pop up box. Attached is my code: import time from selenium import webdriver import os class printing_browser(object): def __init__(self): self.profile = webdriver.FirefoxProfile() self.profile.set_preference("services.sync.prefs.sync.browser.download.manager.showWhenStarting", False) self.profile.set_preference("pdfjs

问题 I'm trying to save a website as PDF through printing dialog. My code allows me to save as pdf, but asks me to input a filename, which I don't know how to pass a filename to the pop up box. Attached is my code: import time from selenium import webdriver import os class printing_browser(object): def __init__(self): self.profile = webdriver.FirefoxProfile() self.profile.set_preference("services.sync.prefs.sync.browser.download.manager.showWhenStarting", False) self.profile.set_preference("pdfjs

问题 Okay, here's some code ( pdfDocument is a com.itextpdf.text.Document ): PdfPTable table = new PdfPTable(1); PdfPCell cell = new PdfPCell(); cell.setFixedHeight(3f); for (int i = 1; i < 100; i++) { table.addCell(cell); } pdfDocument.add(table); According to my calculations (pixels = points / 0.75f) 3f points should be EXACTLY 4 pixels on a screen with 96dpi (which mine is). However, when I create a table with the code above, I get alternating heights of the cells 4 - 3 - 4 - 3 - 4 - 3 etc...

问题 The prawn gem has an initialize option :compress , which is described here. Apparently it "Compresses content streams before rendering them" . With and without compress: true I generated the same 14 page pdf twice. Each page has 2 photos and all sorts of text. The resulting file size was the exact same. So my question is: in production with larger quantities of photos will I see a difference in file sizes? Or maybe compress: true eats more or less RAM during processing? What is its purpose?

问题 Okay, here's some code ( pdfDocument is a com.itextpdf.text.Document ): PdfPTable table = new PdfPTable(1); PdfPCell cell = new PdfPCell(); cell.setFixedHeight(3f); for (int i = 1; i < 100; i++) { table.addCell(cell); } pdfDocument.add(table); According to my calculations (pixels = points / 0.75f) 3f points should be EXACTLY 4 pixels on a screen with 96dpi (which mine is). However, when I create a table with the code above, I get alternating heights of the cells 4 - 3 - 4 - 3 - 4 - 3 etc...

问题 The prawn gem has an initialize option :compress , which is described here. Apparently it "Compresses content streams before rendering them" . With and without compress: true I generated the same 14 page pdf twice. Each page has 2 photos and all sorts of text. The resulting file size was the exact same. So my question is: in production with larger quantities of photos will I see a difference in file sizes? Or maybe compress: true eats more or less RAM during processing? What is its purpose?