CUPS prints very complex PDF files

One source of PDFs that we need to print regularly are specifications. The PDFs have very complicated backgrounds and the rendering is slow. The problem is, however, that the document is 80 to 100 MB in size and sometimes larger.

So far, I've found that the printer can always print one page when it is rasterized and output to the printer. So in Okular I would print only one page and choose the option to rasterize the output. This approach worked flawlessly, but is a manual intervention that is more patience with large PDFs.

So my questions are:

  1. Has anyone solved this problem and created a script or plug-in that prints one page each in rasterized form?

  2. Which approaches and tools could help me create a script, provided there is no script I can use.

The environment we use is Slackware 14.2. Since the printer has a network, we tried to print from a Windows 10 computer and have the same problem from there. This print was forwarded directly to the printer. The solution should actually be in the Linux area, because we do not work much with Windows at all.

film – How can prints be displayed digitally?

I'm mainly a film and paper photographer: I take photos, edit the film and then make prints in the darkroom. The end product of my work is definitely a piece of paper.

But I want to be able to show images of these prints digitally (ie on the internet …). I would like to know how it works best and how it is done professionally.

There are three obvious approaches:

  • Scan the negative (I can do that) and process the digital copy to look like the print I made.
  • Take a very careful picture of the print, check the white balance, etc. (to get a good representation of the paper color), and use this as a picture.
  • scan the To Print with a flatbed scanner (that's really a variation of the previous approach).

The first is both difficult and unattractive: it takes a lot of work that I'm not very interested in to reproduce what I've already done in the darkroom. Print looks like it.

The second is me, and it should be reasonably easy. Keeping the prints flat is the hardest thing to do, but I can matte them if necessary.

I can not do the third one right now, but I could buy a flatbed scanner, if that's clearly the best approach.

I would like to know two things.

  • What do other people do who have the same problem but do not have access to the resources that people, for example, have for making expensive photo books?
  • How is that professional? If I'm looking for a good photo book from someone whose product was physical prints and for whom the quality of the print was important, how are they currently being converted into images on the page?

rstudio – R Markdown prints empty tables with kable ()

Since I had to uninstall and reinstall R and R Studio on my PC, I can not see the tables created with the kable () function in R Markdown.

When I run the block, there is no error creating the table, but in the notebook output, the elements of the table, with the exception of the titles in white and the default invisible white background, appear the contents of the table, unless they are select the text with the cursor. However, the table is displayed correctly in the viewer. When I knit HTML, the table is also displayed correctly with all visible elements. The only problem is that in the same output of the chunk, I can not visualize tables that I've seen well in the past.

This is problematic because I am a student and need to visualize the output of my spreadsheets to be able to further process my deliveries, since I have to use kable () yes or yes and it is too tedious to know the viewer or to process HTML. to be able to do this Check if my table is correct.

I currently have R Studio 1.2.5001 and R 3.6.1. I used to have the latest version of R Studio, but I do not remember which version of R I had installed, but it was certainly not up to date and I had no problems viewing the tables in R Markdown.

I hope you can help me with my problem. Thank you very much

Print – What is the quality of "1 hour photo" compared to ordering prints?

In the scenario that you describe, there is no difference if you compare two services from the same non-specialized provider. They have only one set of equipment and it is used for everything. The difference is that someone has to stop doing what he does to do the one-hour printing, while the "regular" service can be done at will.

In the days when the movie was king, there was a difference. The one-hour work, which often took several hours, was done internally, right where you filmed the movie. Typically, the same store also offers a standard service that takes about 5 days to complete as it is sent to a fabricator.

The one-hour specialists tended not to change the chemicals as often as they should, and some did not thoroughly clean the equipment. The slower services were usually provided by large-volume processors who only developed and printed films and therefore relied on their reputation for their success.

One-hour business tended to be more tourism-driven and less thoughtful about repeat business, so the slower service could lead to better negatives and, at least theoretically, better prints. But only experience can tell you. Some one-hour services were excellent; some not so much.

Some of these big movie processors are still surviving, and a number of smaller ones have emerged lately as interest in film photography has increased again. In general, you get great results today, but a one-hour service is no longer an option for film shooters.

Ferrets Rule!

django – prints data from a square combobox

I'm using a combo box that looks from the material view and wants a text box to output data. Depending on the option selected in the combo box, data from this table is printed in the text box. For example, if you have the data ID in a user table, the name Last name If you select an ID that is displayed in the combo box, you will see the name in a text box, which in this case is related to this user ID.

This is the ts component

examenes: Observable;
examen = new Examen();
categorias: Categoria();
getPacientes(): void {
      .then(pacientes => this.pacientes = pacientes);
  getCategorias(): void {
      .then(categorias => this.categorias = categorias);
    redirect(){alert("Se Agrego Correctamente");
    ngOnInit() {  this.getCategorias();

The following is the combo box with the text box that I want to use

  Listado de Pacientes

Print – Do I need to scan prints at more than 300 dpi to make enlargements?

The question is really what resolution drop you want to accept. It's not terrible to just switch from 300PPI at 4×6 to 150PPI at 8×12 (oh, it's not great either), but if you stay a few feet from the photo you will not notice it.

Note that I said "8×12". Keep in mind that 8×10 means you need to trim your image to get the new ratio.

But if you want to keep the picture up close, you want to get more PPI. This is a balancing act: interpolate too far and the picture falls apart … not enough and you have not given yourself enough PPI for printing.

I would feel comfortable reaching 150% of the original – 225PPI at 8×10. You probably need to hone it a bit at this size.

prints – Print on Dibond

Many printers have a "Dibond" product.

Some print your photos on paper, which is then glued to the aluminum sheet, and some print, as far as I know, directly with UV ink on the aluminum sheet.

I just read the following statement on a printer's website (they print on paper):

Our technique is not to be confused with photo printing on aluminum (the printing of photos on aluminum is an industrial and not a qualitative technology).

In this technique, the surface of the dibond is printed directly by latex printers. This technology prints in CMYK without degraded ink, so there is not enough color gamut to print the gradations needed for the photo. This process is often used for events, advertising, etc. The print resolution is limited, the color gamut is reduced and the life is reduced.

(This is an automatic translation from French, but I think it is understandable).

Is that a reasonable statement? Is it outdated? Is that clearly wrong?

Could someone shed some light on the differences between the two technologies?

python – Gets the formatted address in the stack along with the geometry (lat / long) and prints it to csv

I have a CSV file with 3 fields, two of which are of interest to me dealer name and city,
My goal was to output several CSV files, each with 6 fields, dealer name. city. Surname. formatierte_Adresse. width. degree of longitude,

For example, if an entry is the CSV Starbucks, ChicagoI would like the output CSV to contain all the information in the 6 fields (as mentioned above) as follows:
Starbucks, Chicago, Starbucks, "200 S Michigan Ave, Chicago, IL 60604, USA", 41.8164613, -87.8127855.
Starbucks, Chicago, Starbucks, "8N Michigan Ave, Chicago, IL 60602, USA", 41.8164613, -87.8127855
and so on for the rest of the results.

I used the text search request from the Google Maps Places API to do this. Here is what I wrote.

import pandas as pd
# import googlemaps
import requirements
# Import csv
# Import pprint as pp
to fall asleep now and then
import randomly

def search_output (search):
if len (data['results']) == 0:
print (& # 39; No results found for {}. & # 39;. format (search))


# Create CSV file
Filename = search + & # 39; .csv & # 39;
f = open (filename, "w")

size_of_json = len (data['results'])

# Get the next page token
# if size_of_json = 20:
# next_page = data['next_page_token']

        for i in range (size_of_json):
Name = data['results'][i]['name']
            Address = data['results'][i]['formatted_address']
            Latitude = data['results'][i]['geometry']['location']['lat']
            Length = data['results'][i]['geometry']['location']['lng']




            f.write (name.replace (& # 39;, & # 39 ;, & # 39;) + & # 39 ;, + address.replace (& 39 ;, & # 39; ;, & # 39;) + & # 39; + & gt; + str (width) + & # 39 ;, & # 39; + str (longitude) + & # 39; & # 39; ;)

f.close ()

print (& # 39; file successfully saved for "{}". & # 39; format (search))

sleep (random.randint (120, 150))

API_KEY = & # 39; your_key_here & # 39;

PLACES_URL = & # 39; https: // & # 39;

# Create data frame
df = pd.read_csv (& # 39; merchant.csv & # 39 ;, usecols =[0, 1])

# Create a search query
search_query = df['Merchant_Name'].astype (str) + & # 39; & # 39; + df['City']
search_query = search_query.str.replace (& # 39; & # 39 ;, & # 39; & # 39;

random.seed ()

to search in search_query:
search_req = & # 39; query = {} & key = {} & # 39 ;. format (search, API_KEY)
request = PLACES_URL + search_req

# Make inquiry and data in & # 39; dates & # 39; to save
Result = Inquiries.get (request)
data = result.json ()

Status = data['status']

    if status == & # 39; OK & # 39 ;:
search_output (search)
elif status == & # 39; ZERO_RESULTS & # 39 ;:
print (& # 39; No results for "{}". Moving on .. & # 39; format (search))
sleep (random.randint (120, 150))
elif status == & # 39; OVER_QUERY_LIMIT & # 39 ;:
print (& # 39; Query limit reached! Try after some time. "{}" could not be completed. & # 39;. format (search))
Print (status)
print (& # 39; ^ status out of order, try again. "{}" could not be completed. & # 39;. format (search))

I want to implement the next page token, but I can not think of a method that will not mess things up. Another thing I want to improve is my CSV writing pad. And handle redundancy.
I still plan to concatenate all CSV files (but still keep the original separate files).

Please note that I'm new to programming. In fact, this is one of my first programs that has helped me achieve something. So please elaborate something more, if need be. Many Thanks!


BlackHatKings: proxy lists
Posted by: Afterbarbag
Post Time: June 11, 2019 at 16:56.