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Re: Pics and files

 

¿ªÔÆÌåÓý

Yes, I assumed he just flip flopped them.


From: 7x12minilathe@... [mailto:7x12minilathe@...]
Sent: Monday, July 31, 2017 7:02 PM
To: 7x12minilathe
Subject: Re: [7x12minilathe] Re: Pics and files

?



On Mon, Jul 31, 2017 at 3:59 PM, soffee83@... [7x12minilathe] <7x12minilathe@...> wrote:
?

Thanks for that PDF info Michael. I had always assumed somehow that those "vector" types you describe were just stuff that was too old to originate in digital form and thus had been scanned rather than converted and formatted to PDF.?

You have it backwards.? Perhaps a typo.

raster files contain pixels
vector files contain letters, the same ia with a word processing files,, you can edit and copy past.

?The above applies to both text and graphic parts of the files. ? Drawings can be made of editable lines and text.? Typically technical drawing or diagrams are like this but many times are is cartoon artwork.

And yes.? When you can a book you get a RASTER file but then it is easy to use OCR software to process the file into a vector type.

With someway like Adobe Acrobat you can convert one to there other and convert in either direction. ? ?Other software allows this too. ? If using a Mac t comes with Preview and it can convert between different image formats
Re: Pics and files

Chris Albertson
 



On Mon, Jul 31, 2017 at 3:59 PM, soffee83@... [7x12minilathe] <7x12minilathe@...> wrote:
?

Thanks for that PDF info Michael. I had always assumed somehow that those "vector" types you describe were just stuff that was too old to originate in digital form and thus had been scanned rather than converted and formatted to PDF.?

You have it backwards.? Perhaps a typo.

raster files contain pixels
vector files contain letters, the same ia with a word processing files,, you can edit and copy past.

?The above applies to both text and graphic parts of the files. ? Drawings can be made of editable lines and text.? Typically technical drawing or diagrams are like this but many times are is cartoon artwork.

And yes.? When you can a book you get a RASTER file but then it is easy to use OCR software to process the file into a vector type.

With someway like Adobe Acrobat you can convert one to there other and convert in either direction. ? ?Other software allows this too. ? If using a Mac t comes with Preview and it can convert between different image formats
Re: Pics and files

 

Thanks for that PDF info Michael. I had always assumed somehow that those "vector" types you describe were just stuff that was too old to originate in digital form and thus had been scanned rather than converted and formatted to PDF.

BTW- As much as I like a good paper book, that search capability easily balances things out. Drives me crazy when a PDF can't do it (that, and the index page numbers that don't match the document's).
Re: PDF files

wmrmeyers
 

¿ªÔÆÌåÓý

There aren't that many that do both images and text well. Not that the "portable document format" is perfect. Just pretty good for folks who need or want to combine text and images in one file. Works best on a fairly large screen if you use it for books. They often don't ?scale well. I have 40+ gigabytes of metalworking material, among other things, in the PDF format. It's outlasted over a dozen other file formats for me.

Bill in OKC



Sent from my Sprint Phone.

-------- Original message --------
From: "jimmy alpha zriverrat@... [7x12minilathe]" <7x12minilathe@...>
Date: 7/31/17 4:59 PM (GMT-06:00)
To: 7x12minilathe@...
Subject: Re: [7x12minilathe] PDF files

?

On 7/31/2017 5:23 PM, wmrmeyers wmrmeyers@... [7x12minilathe] wrote:
> PDF files contain images and text, most of the time. Unlike most image
> files.
>
> Best reason to use PDF files right there. :)
>
>
> Bill in OKC

Perhaps we can add all of the other type files to this thread too, there
are hundreds of file types we all use?
Re: Pics and files

 

¿ªÔÆÌåÓý

The confusion here with PDF files is that PDF files can be Vector or Raster.
?
In a Vector based PDF file you can highlight text and copy it as text and paste it into another program.
?
In a Raster based PDF file the text in the file will be displayed in a raster (bitmapped, pixels only) format which cannot be highlighted as text and copied (or searched for with a search command).
?
A Vector based PDF files can contain both raster (bitmap)?images. The Raster image can include text within the image itself.
?
The PDF file format was based on the PostScript print language.
?
You can take a file containing text, and create either a PDF file that is vector, or raster. Sometimes PDF documents are created in a raster format to prevent the copying of the text easily. This of course was easily bypassed with OCR (optical character recognition)?software which can translate the shapes of the bitmapped/raster images of the text and convert them back to editable text again.

But this has little to do with machining, so that's all I have to say.
?
Michael - California, USA
Micro-Mark MicroLux 7x16
LMS 3990 Hi-Torque Mill with power feed


From: 7x12minilathe@... [mailto:7x12minilathe@...]
Sent: Monday, July 31, 2017 11:17 AM
To: 7x12minilathe@...
Subject: Re: [7x12minilathe] Re: Pics and files

?

actually a .PDF is an image file.


If you have a .pdf why do you need a image.?

Just put it somewhere on the web and do a link to it.

.PDF readers are free.

Ralph
Re: PDF files

 

On 7/31/2017 5:23 PM, wmrmeyers wmrmeyers@... [7x12minilathe] wrote:
PDF files contain images and text, most of the time. Unlike most image files.
Best reason to use PDF files right there. :)
Bill in OKC
Perhaps we can add all of the other type files to this thread too, there are hundreds of file types we all use?
Re: Pics and files

wmrmeyers
 

¿ªÔÆÌåÓý

PDF files contain images and text, most of the time. Unlike most image files.?

Best reason to use PDF files right there. :)


Bill in OKC?



Sent from my Sprint Phone.

-------- Original message --------
From: "rhulslander@... [7x12minilathe]" <7x12minilathe@...>
Date: 7/31/17 1:16 PM (GMT-06:00)
To: 7x12minilathe@...
Subject: Re: [7x12minilathe] Re: Pics and files

?

actually a .PDF is an image file.


If you have a .pdf why do you need a image.?

Just put it somewhere on the web and do a link to it.

.PDF readers are free.

Ralph
Re: Pics and files

Ian Newman
 

¿ªÔÆÌåÓý

Hi Ralph,

If you have a .pdf why do you need a image?

The issue arose due to a desire a use a photo hosting site.

All the best,
Ian


On 31 Jul 2017, at 19:16, rhulslander@... [7x12minilathe] <7x12minilathe@...> wrote:

?

actually a .PDF is an image file.


If you have a .pdf why do you need a image.?

Just put it somewhere on the web and do a link to it.

.PDF readers are free.

Ralph
Re: Pics and files

 

True - I needed logo a silkscreen for a Rockwell Collins device I was designing. Needed the color seps of a vector based artwork for a rack unit I was having machined.

The only place I could find one in the short term (after asking corporate for one who had no clue waht I meant by "vector" ) was in their Stockholders Quarterly Report... I used Corel to rip it out of the PDF and was able to give a preflight that was close to the artwork guys at the machine shop for the silkscreen dude...

On 7/31/2017 2:30 PM, Ryan Daughtry rayanth@... [7x12minilathe] wrote:
"actually a .PDF is an image file."
I am intimately familiar with the 1200+ page PDF Specification, as I write
programs to read PDFs. They are not image files. They can contain images,
but they are not images themselves, they are a descriptive language, with
roots in the same PostScript language that your computer uses to tell your
printer how to print a document. PDF Language defines all of the constructs
needed to generate vector graphics, basic geometric shapes, text, embedded
pictures, and with proper extensions, even multimedia such as sound,
videos, 'virtual 3d graphics', etc.

Due to the overhead of the PDF language, a PDF containing only embedded
imagess will almost always be larger in disk size than the image files
themselves. (Exception being if the image file was a low-compression jpeg,
or uncompressed image like GIF or BMP, as PDF may manage to compress it
more)

As for why an image file might be needed over a PDF, many image sharing
sites will only let you share image files, and not PDFs. Since the
discussion devolved from where to host images to share, I presume there's
still consideration for using image sharing sites, rather than generic
cloud storage, which would let you store and share anything - and be more
likely to compromise other personal files and information if hacked.

-- Ryan



On Mon, Jul 31, 2017 at 11:16 AM, rhulslander@... [7x12minilathe] <
7x12minilathe@...> wrote:


actually a .PDF is an image file.

If you have a .pdf why do you need a image.

Just put it somewhere on the web and do a link to it.

.PDF readers are free.

Ralph
Re: Pics and files

Ryan Daughtry
 

>> "actually a .PDF is an image file."

I am intimately familiar with the 1200+ page PDF Specification, as I write programs to read PDFs. They are not image files. They can contain images, but they are not images themselves, they are a descriptive language, with roots in the same PostScript language that your computer uses to tell your printer how to print a document. PDF Language defines all of the constructs needed to generate vector graphics, basic geometric shapes, text, embedded pictures, and with proper extensions, even multimedia such as sound, videos, 'virtual 3d graphics', etc.

Due to the overhead of the PDF language, a PDF containing only embedded imagess will almost always be larger in disk size than the image files themselves. (Exception being if the image file was a low-compression jpeg, or uncompressed image like GIF or BMP, as PDF may manage to compress it more)

As for why an image file might be needed over a PDF, many image sharing sites will only let you share image files, and not PDFs. Since the discussion devolved from where to host images to share, I presume there's still consideration for using image sharing sites, rather than generic cloud storage, which would let you store and share anything - and be more likely to compromise other personal files and information if hacked.

-- Ryan



On Mon, Jul 31, 2017 at 11:16 AM, rhulslander@... [7x12minilathe] <7x12minilathe@...> wrote:
?

actually a .PDF is an image file.


If you have a .pdf why do you need a image.?

Just put it somewhere on the web and do a link to it.

.PDF readers are free.

Ralph
Re: Pics and files

 

actually a .PDF is an image file.

If you have a .pdf why do you need a image.?

Just put it somewhere on the web and do a link to it.

.PDF readers are free.

Ralph
Re: Pics and files

[email protected]
 

Mike, I just popped a PDF into my GIMP and imported it as first, layers (no good) and images (okay), but each images gets its own filename even when exporting to TIFF. That means an independent program is needed to make the multi-page conversion work for your purposes. A quick check with The Google shows a number of online services to perform this task, as well as a number of free download, likely supported with embedded adware, beware!
Re: Pics and files

[email protected]
 

Mike, PDF is a multi-page format, while JPG/JPEG is not. The former is typically used for documents, while the latter is obviously used for images. Certainly, a document page can be converted to an image, but the file format will support only single pages per filename. If you require to have image format for a multi-page document, look for a PDF to TIFF converter, as the TIFF format supports more than one page. It is often used for fax "collection" which is frequently more than a single page.
Re: Pics and files

 

No. Only attachments included in the posts pose a problem for dial up connections. Photo and file storage areas are a separate concern.

On Mon, Jul 31, 2017 at 2:43 AM, tommipaunonen@... [7x12minilathe] <7x12minilathe@...> wrote:
?

So in short, someone having a dial-up connection is the only reason for not having the photos here? If this really is the case, we should have the photos in for greater good
Re: Pics and files

 

> Subject matter discussed is categorized

Maybe a bit of an understatement. ;-)

Thanks for the Hobby Machinist tip though Dick. Somehow that wasn't one of the places that shows up a lot on Google. Looks good! Signed up yesterday.

Take Care
Re: Pics and files

 

This is actually a interesting thread.

The poster who said they were still on dial-up internet access really got my attention.

Obviously for such a user they cannot tolerate embedded images so they have to have just a link.

Then lost links:

I have received emails from people looking at a post I made years ago that the image links were broke.
I usually post from my website but got dumped by my host so those links from the past are lost.
Sometimes I have been able to find the images but often I cannot they are lost.

Ralph
Re: Pics and files

 

The only thing I would like to say about that is that with every external provider ( dropbox google and so ) there is the risk to loose images and so on.
As it has happened with flickr photobucket and so, one could close the account and all the images get losed.

If they are in the files section here then you will find for ever.

I do use to write in an italian forum where the images could not be linked but must be uploaded.
This is by choice, to avoid losing informations ( images ) also if there is more expenses for the admin/moderators that pay a little fee for the bigger website space.

It's sad when you find an interessing thread, in some site, and all the photos or images are a a cat that say to upgrade your account or similar....
Re: Pics and files

 

I've done this myself for single images that fit on the visible screen. But what do you do if, say, you want to turn a 20 page pdf document into a jpg? I'd that what GIMP can do?

Mike Taglieri

On Jul 27, 2017 3:18 PM, "Tim Iafolla iafollatim@... [7x12minilathe]" <7x12minilathe@...> wrote:
?

It's dead easy in Windows too.?

Arrange and zoom the pdf page on the screen, then hit Alt-PrtScr (which copies the screen image to memory).? Then open Paint and paste the image, where you can crop it, size it, etc.; then save as a jpg.


From: "MC Cason farmerboy1967@... [7x12minilathe]" <7x12minilathe@...>
To: 7x12minilathe@...
Sent: Thursday, July 27, 2017 2:28 PM

Subject: Re: [7x12minilathe] Re: Pics and files

?
Mike,

I use GIMP to convert PDF files to images files, and then upload them
to Flickr. I don't know how hard it is to do in Windows, but it's quick
and easy in Linux.

On 07/26/2017 10:09 PM, Mike T mctaglieri@... [7x12minilathe] wrote:
> I've had a Flickr account for many years, and use it to put photos
> whose links I share with various groups. Much better than having to
> wait for administrators of whatever group to decide whether a
> particular photo is worthy to be posted. It is unfortunate that
> Flickr can't share pdfs also, but it's very simple to use and Drive
> (which can share pdfs) is where I store some things that are personal
> and I'd have to make decisions on whether to share this or that. This
> means that sooner or later I'd share something I wanted to keep
> private and make a laughingstock of myself. Much better to have all
> the photos I want to share in a place that's separate from where I
> store the things I DON'T want to share.
>
> Mike Taglieri
Re: CNCZEUS is now Open source

Chris Albertson
 

You have figured out why it is not good to use proprietary tools for open source projects.? But in the author's favor this was not intended to be open source until the software became so old that it was no longer a viable commercial product.

I read that there is a cheaper compiler around, like $50 or so.? You don't need the Windows version.

I think you would need the compiler for any serious use.? Say you wanted to add a feature like a home switch or electronic "touch off".?

If you need a really simple controller get GRBL?


On Sat, Jul 29, 2017 at 2:38 PM, 'Jose M. Sanchez' opjose@... [7x12minilathe] <7x12minilathe@...> wrote:
?

You should be able to download Visual Basic at no cost.



Sent from a fancy digital leash...

On Jul 29, 2017, at 5:04 PM, Tim Iafolla iafollatim@... [7x12minilathe] <7x12minilathe@...> wrote:

?

I just tried downloading CNCZeus from GitHub, and all that's there is the source code.? Does anyone know if there's an executable available for download, or do I need to buy a $100 compiler just to try it out?

Thanks.


From: "Warren LeMay notebook@... [7x12minilathe]" <7x12minilathe@...>
To: 7x12minilathe@...
Sent: Saturday, July 29, 2017 4:41 AM
Subject: Re: [7x12minilathe] CNCZEUS is now Open source

?
I'm not sure where the below email was, but it is 12 hours later, I just got up, and it arrived here at 4:38 AM.
Yahoo Magic??
Warren L

On 7/28/2017 4:31 PM, Warren LeMay notebook@... [7x12minilathe] wrote:
blow it....? I think Chris authored it...? Beat me up if I mess this up Chris... (on or offline)
In the US, those applications that run on MS-DOS are considered a bit barbaric and lacking in sophistication.? The one thing that Chris and I do differ on is that MS-DOS is pretty much the original
[snipped]





--

Chris Albertson
Redondo Beach, California
Re: CNCZEUS is now Open source

Chris Albertson
 

I've done this in testing. ? I have a bunch of motors and drivers and power supplies. ? ?It takes about 15 minutes to connect an Arduino to the driver and a variable resister and then the software creates steps at a rate proportional to the variable resister setting. ? ?What you end up with a very much the same thing at the speed control for the spindle motor. ? Arduino clones are under $4 shipping included.? Much cheaper than signal generators. ? The test setup is so simple I don't bother saving it and re-build one each time I need it ?The parts are all connectorized

A simple setup like that is enough ?for a power feed on one axis. ? This is how I'm slowly building up a full CNC capability.? Adding power feed to one axis at a time. ? ?The last step is computer control of all 3 or 4 axis

On Sat, Jul 29, 2017 at 1:23 PM, Tim Iafolla iafollatim@... [7x12minilathe] <7x12minilathe@...> wrote:
?

If all one wants is to run a stepper motor back and forth with no programming, there are a couple of shortcuts.? First, a simple variable speed pulse generator with remote control:


All you'd need is to send the pulses to a stepper driver like this one:?
Total cost less than $30; add a 24V 20A power supply and a beefy stepper motor and you're still under $120 or so.

The next step up is something like this, also connected to a stepper driver


This allows manual speed and direction control of multiple stepper motors, again with no programming.? It can also be driven by MACH3 or similar CNC software. It has inputs for position stops, so with a bit of programming you could do some simple motor-driven DRO.

And here's the next step up: a wireless 4-axis handwheel:

HTH




.



From: "rhulslander@... [7x12minilathe]" <7x12minilathe@...>
To: 7x12minilathe@...
Sent: Saturday, July 29, 2017 10:31 AM
Subject: Re: [7x12minilathe] CNCZEUS is now Open source

?
Wow, thanks Chris and everyone for this great recompilation of things I have learned and thought about over the years.

Now I am actually getting closer to having motorized table(s), not at the point of going to CNC but I will use a motor to move my table.

Most likely I will use a LinuxCNC program eventually but to start I will probably just program a microprocessor to run a stepper motor back and forth.

This conversation really helped me remember things.

Ralph?





--

Chris Albertson
Redondo Beach, California
25841 - 25860 of 120319