pdf

问题 I am trying to set the figure margin for a pdf generated with R. Using mar, I can reduce the plot margins. However the resulted plot is still a square in the middle of the page instead of using all the space. How can I change that? pdf(file = "test.pdf", paper="a4r") par(mar=c(0,0,0,0)+0.1) plot(1:10,1:10) dev.off() Thank you! 回答1: Within pdf(), change the width and height arguments (https://stat.ethz.ch/R-manual/R-devel/library/grDevices/html/pdf.html). The default values are 7 and 7, which

问题 I'm trying to code a printer automation using Python on Windows, but can't get it done. I'm not really understanding the topic and i'm a little surprised - a "simple" way to get this done doesn't seem to exist..? There are so many APIs that allow to access common things in a nice and easy way, but printing seems to be something "special"..? Here is what i have and what i want to do: There is a PDF file. The PDF already exists, i do not want to create PDFs or any other filetype. I like to

问题 I need to collect data from a visitor in an HTML form and then have them print a document with the appropriate fields pre-populated. They'll need to have a couple of signatures on the document, so it has to be printed. The paper form already exists, so one idea was to scan it in, with nothing filled out, as an image. I would then have the HTML form data print out using CSS for positioning and using the blank scanned form as a background image. A better option, I would think, would be to

问题 Is there a way to add additional font styles into Apache Pdfbox? We're currently trying to work around printing PDFs in our system (currently being done with PDF-Renderer.) I have been looking at various alternatives (pdfbox, jpedal, jPDFPrint) Our hope is for a free GPL compatible library to use, and as such we're leaning towards pdfbox. I have been able to write some sample code to print out the pdf which 'works'. See below: PDDocument doc; try { doc = PDDocument.load("test.pdf"); doc.print

问题 I would like to select one element from a list using python following the normal distribution. I have a list, e.g., alist = ['an', 'am', 'apple', 'cool', 'why'] For example, according to the probability density function (PDF) of normal distribution, the 3rd element in the given list should have the largest probability to be chosen.Any suggestions? 回答1: from random import normalvariate def normal_choice(lst, mean=None, stddev=None): if mean is None: # if mean is not specified, use center of

问题 I did some research and I found this post: How to create a link to download generated documents in symfony2? I tried the solution, but it show my pdf in the browser, but what I want is that when someone click the link, it directly download the file. Is ther a way to do that with Symfony? Kévin Duguay 回答1: Set up an action. This uses annotation for the route. YOu can of course use yml or xml or whatever you are currently using /** * @Route("/download", name="download_file") **/ public function

问题 I did some research and I found this post: How to create a link to download generated documents in symfony2? I tried the solution, but it show my pdf in the browser, but what I want is that when someone click the link, it directly download the file. Is ther a way to do that with Symfony? Kévin Duguay 回答1: Set up an action. This uses annotation for the route. YOu can of course use yml or xml or whatever you are currently using /** * @Route("/download", name="download_file") **/ public function

问题 Using command-line ghostscript, is it possible to remove duplicate embedded objects (images) in the PDF and replace them with a single instance? I have a 200+ pages PDF with a background image and some smaller logos on each page. The file is very large, because the very same background image and logo binaries are embedded in each individual page, instead of being embedded once and then referenced on each page. I am not the creator of the PDF so I can not solve the problem at it's source. (I

问题 Using command-line ghostscript, is it possible to remove duplicate embedded objects (images) in the PDF and replace them with a single instance? I have a 200+ pages PDF with a background image and some smaller logos on each page. The file is very large, because the very same background image and logo binaries are embedded in each individual page, instead of being embedded once and then referenced on each page. I am not the creator of the PDF so I can not solve the problem at it's source. (I

问题 I need to be able to export PDF's that I am creating to JPEG, so that users can have a screenshot/thumbnail of the end product, which is faster than opening the whole PDF. I am running this on an ASP.NET website running in Medium Trust in the Rackspace Mosso Cloud . I have yet to find a library that will either work in Medium trust, or in the case of ABC PDF, which works great locally, wont load in Mosso. Maybe Mosso has a custom trust level? I know that iTextSharp works on Mosso, but I haven