Measurements inaccurate after printing

I have some time so i’m doing some testing now. Check this foolishness out.

happened twice. once the first time i printed this triangle test file in the pdf viewer for windows and once the first time I printed the same file through acrobat reader. but then without changing anything i just hit the print icon again and they printed fine… odd… *shrug

my testing thus far on layout stuffs

print tiled pdf acts like it is printing in the spooler but nothing shows at the printer. preview print, then printing from there acts like it is printing in the spooler but nothing shows at the printer.

preview tiled pdf, then printing from there works with all measurement accurate

saving pdf and printing…missing side guidelines but they show in the pdf viewer, and acrobat reader. (had my fields set at .40 inches) Saving pdf and printing with 1 inch fields then gives the guidelines on the sides but the measurement is off by 1mm

changing fields to 1 inch the top and bottom margins are huge while the sides, not as much. half maybe (landscape)

export png is fine export pdf only exports the 1st page (so really whats the point)

triangle test_11.pdf (1.3 KB)

triangle test2.pdf (9.4 KB)

Export PDF should say Export PDF (single sheet) Is Export tiled PDF also in the export list, or should it be added?

Sorry, what? Yes, this mode doesn’t create multipage document. It exports separate files where each contains one page as you see it when create a layout. So, please, check your directory and find “missing” files there.

@slpencer, please, check what users say before proposing changes. They are not experts in program and this is not confirmed bug report.

It is not in the list because i did not add it intentionally.

@ladysinaz, you are doing great job, but as developer i don’t find much useful information in your thoughts. You asks a lot questions and this is greate. But you could help me even better if you could give me clues about wrong place. Your stream of thoughts should be more logical and structured. Right now it is more looks like i did this and here is what i got without any analysis.

For example, you cannot print a pattern. Good, we know our goal. Next step is to find what is wrong. Valentina prints in different ways:

  • We should check if scaling is right from the start. Looks like it is, because DXF and SVG have right scaling. And the same code print in each case.
  • You can try export to PDF and print from external application.
  • You can print from Valentina.
  • We already know that margins are very important.
  • And one thing you did not think about. Maybe tile feature creates wrong image.

Some stuff I put isn’t necessarily for you guys. You as the developers know that margins are important but the end user might not. The reason i posted all of those test was that I do not fully understand how it works. So if something is a bug, you can see it in my results. If not a simple explanation of how it works is very helpful. Like I didn’t know that export pdf exports the entire layout but saves it as individual files. Now I do, all is good :slight_smile:

Some of the ramblings are also for end users. since I had trouble with this, it is safe to assume others will as well and hopefully going through this information (without programmer brain) it can be helpful to them (since it may not be in a wiki yet))

Sometimes what I read is very technical. I can’t make sense out of some of it and I have a programming background. Although it was a long time ago. I suspect other new users without tech backgrounds would find some of it difficult to make sense out of as well.

And now for a question about the export pdf. What is the difference between export pdf and save pdf?

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Okay. :slight_smile: I had feeling. But decided to say in case you wait my response

Do you know C++?

Do you mean Save as tiled PDF? Yes, probably it is better to rename it to Export as tiled PDF. Here is how you can help Fixing typos.

Actually c++ is what I learned in school but that was… ouf 15 years ago and I haven’t touched it since. All I remember is cursing out semi colons :wink:

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From what I can tell you can save a tiled pdf but can only export the single sheet/ multiple file version. Which is fine once you know the difference.

@ladysinaz one thing that I believe would be useful to many is is if you create a saved tiled pdf and document the behavior of various pdf printing tools. When I tried this, I found my preferred PDF printing tool (Okular) under KUbuntu does not retain the scaling properly. I did not/do not have time to try every possible tool to print the PDF.

I see two questions here that need answers.

  1. is the scaling correct in the saved PDF file when you do “save tiled pdf”? If not, find a way to prove it and document what the problem is.

  2. Does the saved tiled PDF print on paper while retaining the correct scale. I proved to myself that it does not, at least with one specific tool. I asked and got no answer so I assume the answer is that nobody yet has had the time to document the procedures and/or issues with the many possible tools.

I have mostly looked at Valentina from the point of view of a user trying to create patterns and print them on small paper - It would be good to save a layout and print it again in the future. Probably one of the export options or even save tiled pdf would work. I believe it is worth investigating the way to make these work and document the procedure. IMHO, if we drive the developer to distraction he will be unable to make progress.

I did that a little bit. I used two different ones but I didn’t get that far into it yet. The pile of papers I had was a little crazy lol I still have to figure out what the exact/best margins I should use to get a correct one using the preview, then print. 1 inch seems a little excessive. There are margin settings in the printer, in Valentina and in the pdf apps. I have to play with all of them to see what the best combo is. Once that is done there will be much more specific info to go on. For now, anyone new trying to figure out why their stuff won’t scale right on the tiled can just use the preview tiled/print with a 1 inch margin set in Valentina as at least a starting point to learn the program and have their stuff come out as intended.

if you use margins that are large enough in Valentina in the layout, it is mistaken to be concerned that there will be margins on the printer that take away even more space.

There is something going on somewhere. In my patterns anyway. The margins are set evenly in Valentina on all 4 sides and i would assume they are on the printer as well (still have to check) but my margins on the printed pages are all over the place. With Valentina set at 1 inch, I might have one side that has a margin of 1.5 inch to where the dotted cut lines print, another side 1/4 inch etc It’s workable, but not ideal. This is not my first rodeo with printer though so I’ll sort it out :wink:

My last tech job… what a shit show. Myself (mostly) and a coworker spent a year and a half trying to figure out how to get printers to work properly or at all for that matter. The application was an old application written in assembly coming from a Unix/Linux server. They used to hook to old wyse terminals and such but with the advancing tech the customers where switching to using pc’s and just a command window. Which was fine until the server was sending print requests and codes for cash register drawers. Once Windows 7 came out and a few customers upgraded, everything went to hell in a handbag.

Let me tell you that once I got past the language barrier and understood what @dismine was trying to tell me, I switched from frustration similar to what you are expressing here to the satisfaction of getting useful patterns printed. Fields on the layout page in Valentina = Margins (as used in most word processor or publishing software I have seen using American English). I accepted that and moved on. I don’t remember exactly the dimension that he recommended to you, but trust him. If you make the margins on valentina layout big enough (I think he suggested 10cm, which is nearly 4 inches) it will work. If you do that, the use > PREVIEW TILED PDF to get the preview window directly from valentina it WILL work. You will have the ability to use “options” in the preview to select specific pages and avoid printing all of the blank pieces of paper. Each page will have on it a printed (row,column) number. There will be cutting lines. It will be easier than any jigsaw puzzle.

Try it once. You have nothing to lose but a bit of paper. After you see how it works, you can experiment with smaller margins to save paper.

Oh, I already have. I know how to get the results I want. The rest of the testing is just for the purposes of having detailed info for the wiki/tutorials. I don’t feel comfortable writing them until I know every detail about the topic I write about. I am an annoying student, but it makes me an amazing teacher :wink:

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Maybe @slpencer can suggest a more appropriate category for you to start a new thread to put all of your data. I find it confusing to see a lot of different subjects lumped under one thread

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The way my brain works, everything in this thread has to do with figuring out how to print patterns in a way that works for home users with regular printers. It’s all related vs searching multiple threads to find all the included info. At this point there really isn’t anything for the developers to do other than answering related questions. When there is something actionable (after its been discussed, tested and shown to be an issue) I’ll put it in the tracker, then they can worry about it. :wink:

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just fighted with the same issue, until I realized that for some strange reason when I open Vlentina generated pdfs for printing the printer re-scales the files. ticked Print actual size and it was perfect! Silly me!

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Here is one observation about tiling I made when reusing my paper. For example, I am tiling an A0 pattern to letter size at 100% with “cut lines” printing option on. Some of the “tiles” will come out empty because there is just no content in that section of the A0 draft. But the cut lines will still print. I take those empty pages out and put them back into the printer because I’m stingy like this. When these pages come out with new draft content printed out, it is interesting to observe that the cut lines will not overlap. They will be a few mm off in relation to each other. What does this mean? Paper shifts each time inside the printer. It’s having a dance party in there. So when you combine your pattern together you should never use the edge of the paper as a guide, although you may assume it is straight. The margins and the angle vary ever so slightly on each of your “tiles” in relation to your draft.

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Hmmm… There are paper guides on your printer to ensure that the paper feeds correctly. They should be snug against the paper but not so snug that they make the paper bulge. Otherwise, clean the rollers, they may have some debris on them that is causing more or less friction on the paper as they feed it. I really don’t think this is the program :slight_smile:

Grace, I am not saying this is the program. What I am saying is exactly the opposite: hardware (any printer) has a certain margin of error. I am aware there are paper guides. I am using printers provided by the business center and I am pretty sure any attempt to clean the rollers would be frowned upon :slight_smile: I noticed that many people are very quick to blame the software for discrepancies when so many problems may be caused by their own printer, how they use it, and how they assemble their tiles.

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for me, the only thing on blaming the software is the lack on consistency of printing depending on which was you choose to save / print. But regardless of it being a software thing. As an application that wants ppl to use it. Even if it is not a glitch with the application, there still needs to be understanding on what causes the discrepancies. It’s hard to use as intended if you have to re check and remeasure everything to make sure the pattern came out correctly. Everything I make is extremely snug. There is little room for error when it comes to measurements. Makes me nervous.