What are the weaknesses of printing JPEG as a document?
JPEG is a bit mapped format. That means every part of the was originally created. Because of this printing a JPEG or else interpolating (conjuring up out of thin air) information that is not italic in the original. The former isn't usually too much of a problem but the latter means that enlargements will always be problematic. In contrast PDFs can support is stored as a set of mathematical equations describing lines and curves. As a result the resolution of the on a regular monitor will display it at 72 dots per inch (dpi) but printing it out on a high resolution setter might print it at 24 dpi. Because of this given a choice between a bit map and a vector better only worse. So for example saving a vector-based PDF as a JPEG effectively flattens the saving a JPEG as a PDF will not improve it at all; a vector s print them as they are there is no value in converting them.
What is the best way of combining multiple jpegs into one jpeg/PDF on Mac OS X?
Tobine multiple JPEG format s you want in your PDF right-click and choose open with Preview Step 2 In Preview's Sidebar drag the s to be included in the PDF document; otherwise only a single image may end up the PDF document Step 4 Then from the File menu choose Print Selected Images (or Print... in recent OS X versions) and then PDF Save as PDF
Is TIFF suitable for printing?
TIFF was traditionally preferred for printing because its wider spread varieties do not support lossypression. But in practice this is not a big deal. Image pixels are not used directly in raster s will be barely if at all discernible in print. So it's perfectly OK to use JPEGs vs TIFFs in many cases. Especially as the ding format option in final print-ready PDFs. For placing art in layout apps TIFF or PSD is not a bad idea because there's image resampling ahead for final delivery and rpression in PDF and the fewer rpression steps the better.
Is one's GPA in graduate school unimportant compared to research output?
Grades are generally meaningless although in rare cases they might matter. People who put any weight on them have no idea what grad school is about and put far too much faith in schools to actually differentiate students based on class performance but that's their problem. For an indication of just how ridiculous it would be to place any weight on grades here is a copy of the grades on my Ph.D. transcript n(Apologies for the tiny ; click to zoom in.) Most grades are excused and there are a handful of A's. Supposedly I took 33 courses in grad school. In reality I attended more than 3 lectures from at most 1 courses total (roughly one course per semester). For two of the courses listed I was actually also the course grader (and of course I attended all my recitations!). I took Intro to Algebraic Geometry I three times and Intro to Algebraic Geometry II four times. No real information can be gleaned from this transcript other than the fact that I passed my qualifying exams in the first semester. There is no correlation between which courses I actually attended and which courses have a grade of A instead of EXC; this only depends on what the professor assigning grades at the end of the course felt like doing. The only reason I have this transcript is because an application for a faculty position at a low-ranked school required it even though I had graduated 2 years ago at the time. Undoubtedly the faculty at the school did not care at all and this was something mandated by HR. It took me 1 minutes to figure out how to get the transcript as a pdf from an online portal. I then tried uploading the pdf directly to the HR portal but for some reason the pdf wouldn't upload. I then print-screened the pdf into MSPaint saved it as a jpeg and uploaded the jpeg to the HR portal. The HR portal then converted the jpeg back to a pdf file and saved it fine. Troubleshooting all this took 45 minutes. In retrospect this experience should convince you that any place that requires your PhD grades will be a bureaucratic nightmare to work for. Don't get kicked out of grad school but your grades are not likely to matter at any place that routinely hires and makes use of your degree.
Why use Adobe illustrator vs Photoshop if everything is exported as (e.g. PNG, JPEG) anyway?
my question stems from the fact that Apple expects .png for for iOS app logos PNG files are lightweight bitmap s (-JPEG) it made for solid color images like banners or logos and the small buttons and icons of web pages and mobile device is why Apple asks for PNG. Make your files in Inkscape (Illustrator) or Gimp (Photoshop) save masters in SVG or TIFF export to PNG or JPEG as needed. The vector SVG can be scaled to any size the bitmap TIFF allows layers etc so work in that mode and export to PNG when and where you need it. JPEG is lossy. Great for photos bad for solid colors. When you save an original as JPEG you destroy all the original bitmap information as it converted into apressed grid formula that is unpacked into an approximation of the original when viewed on screen. You can italic use JPEGs in print but please don feed your Indesign layouts with wholesome TIFF and EPS files.
What is the laziest thing you have ever automated?
I was working at a satellite antenna manufacturer where they had several NASA and JPL contracts. They had a major shipment that needed to be made one week and the one shipping clerk they had who knew how to properlyplete the byzantine NASA shipping docs. process was out on maternity leave. So they gave the task to the guy who can never say no of course. Never knew anything about that process but I did know about a whole lot of other NASA paperwork so why not? What I didn realize was the way things were traditionally done it was a very dynamic process just getting the shipping docs.pleted. First there was a set of arcane forms like ten pages with blocks that had to all contain something or it was notplete. Most of the blocks represented the acceptance of a sheaf file or box of supporting documents. The acceptance was done by a NASA representative who was there all week just to verify and sign off every single box but in no particular order. Up to him what he worked on every day. One incorrigibly OCD nit-picking NASA Bureaucrat . he was. Perfect for aplex job where people lives were at stake so I did grant him that. Ok so once I got up to speed with all that came the real kicker; The Hard Part. That ten-page form had always traditionally beenpleted at thispany on a good OLD IBM Selectric writer. Yes they did have a decentpanyputer system that was not to be used by tradition. So every time the shipment auditor found a mistake or something to add the page it was on had to be redone by hand. Which happened all day long(!) italic Yeah for only one day. I went out on the Internet once I got home and found all of the different interactive .pdf versions of the form that were available for free and emailed a couple versions to my work PC. The next morning I filled the form with the info. I had so far which took about 3 minutes. Every time the guy came to hand me another page needing adjustment I took a five-minute break from my real job and made the update. My supervisor saw me doing this and made clear his suspicion that I was breaking some concrete process protocol. Oh Well italic Inevitably the auditor figured out that newly updated pages were no longering down the hall one at a time or at all and came to see what had interrupted my work. I showed him what I begun doing uncertain how he react. He just grinned put out his lower lip and said Finally you guys got the memo! No more crap to fix! italic Thank God I had some laziness left in me! Im pretty sure though that I didn make a friend of the guy I temporarily replaced; I done a real good job of permanently knocking over his rice bowl there. Oh Well italic
What's the most beautiful code you've ever written? By beautiful I mean simple, clean, and implementation of a potentially complex function/algorithm.
I wrote a Turing machine in a version of Turtle Art made of snap-together programming blocks for the purpose of teaching Computer Science concepts to elementary school students in the One Laptop Per Child program. I coded the symbols on the Turing machine tape as colored dots which the turtle could read and translate to integers used as indices into the program table. The table was also made of dots that the turtle could read to determine what state to go into what symbol to write on the tape and which way to move the head for the next iteration. The initial state of the tape for the simple addition 3+2 math appears on the top edge and the program table below. At the end of execution for this simple case when the machine halts we get the tape state containing the answer and also an execution trace as shown below. Activities Art Art Turing Machine s Here are pictures of theplete code with annotations. Activities Art Art Code for Turing Machine s I also provided a machine translation into Logo on a separate page ed from those above. Inparison with -basedputer languages this kind of Turtle Art makes most typing and syntax errors impossible. The user programs directly in a tree structure a much more natural CS representation of a program than a that has to go through lexical analysis and parsing stages to get to a parse tree. On a larger scale I rmend a number of elegant programming language implementations that an undergraduate could read in their entirety including the original Pure LISP the original FORTH Smalltalk and J Ken Iverson's last version of APL. Some of them have implementations written entirely in their own languages with a kernel that can be crosspiled to any new architecture.
Adobe Photoshop: What file type has a higher resolution between a .pdf or a .jpg?
It's likeparing a fully filled grocery bag with just a banana. Like Michael already mentioned but maybe not thorough enough a PDF file is a container there can be anything in it ! A whole book with clean and all a presentation with movies interactive media aplete Photoshop or Illustrator document or even a totally different enclosed file. And it can indeed contain ) of all sizes resolutions and formats. So it's not fair topare a PDF file to a simple image file with a JPEG format that only offers options to make the file size smaller by decreasing the number of pixels and strength in thepression. Now if you would put only that one banana (same resolution same quality) in the grocery bag by using a similar JPEG-setting to JPEG-data into the PDF you'd notice no significant difference. The bag is just a thin layer of paper costing next to nothing. Most scanning and printing drivers offer options to pick a format JPEG (the banana) or a PDF (the same banana in a bag). Just look for the options to define the resolution and JPEG quality that probably appear along or after making that choice. They might be similar...
How do I create multi-page PDFs from PSDs on Photoshop CS5?
This no longer works in CS5 so there is a trick for it - Its not a one step process but kind of a workaround really - STEP1 Export all your files as JPEG or PNG. nIf there are lot of files you can do it in one go using File Scripts Load Files into Stack then create a new PSD with all the files you want exported. Then go File Scripts Export Layers to Files and export it as one of the above viewer or I think Word should definitely work. Like you will need to copy all your images in there and then Save as PDF