Community RSS Feed
http://community.wolfram.com
RSS Feed for Wolfram Community showing any discussions in tag Mathematica sorted by activeMake Mathematica's interface less blurry?
http://community.wolfram.com/groups/-/m/t/1202244
I run Mathematica 11.2 in Windows 10. I have a 4k monitor (resolution 3840x2160) at work and another at home running at recommended 150% scale. The Mathematica interface looks really blurry and it is painful to read (see attached image, the window behind Mathematica is the browser window where this message was being composed. Browser text is very sharp, as is the rest of Windows. Mathematica text is blurry).
My laptop (Surface book) runs at a resolution of 3000x2000 and 200% scale and Mathematica there looks even blurrier.
High dpi monitors have been out for many years and Mathematica has always been blurry for me on them. Is there a way of making it give good text? Am I missing some non-obvious setting that improves this?
Luis.Luis Rademacher2017-10-13T02:23:21ZUse SemanticImport in 11.2.0.0?
http://community.wolfram.com/groups/-/m/t/1200910
I can't get SemanticImport to work in 11.2.0.0. Even the Documentation files won't function. Mac; OS High Sierra; MacBookProColin Grace2017-10-10T07:04:50ZIncrease speed in notebook that uses Dynamic[FinancialData]
http://community.wolfram.com/groups/-/m/t/1200792
I want to make a cfd that presents an analysis of the course of stock prices obtained from FinancialData and in which the user can jump from one stock to another. But when I for instance make a notebook with the following commands
Dynamic[p]
Dynamic{FinancialData[p,{2017,1,1}]
p="GE"
Mathematica becomes awfully slow, while other programs at the same time keep running at the usual speed. Is there any remedy for this problem?
In the Windows 10 task manager I can see that Mathematica uses only about 1% of the Intel i5 processor and 92 MB of the 8 GB memory while the Mathematica Kernel uses about 5% of the processor, 288 MB of the memory and 1 to 2 Mbps of my 50 Mbps download internet connection speed.Laurens Wachters2017-10-10T12:35:43Z[✓] Choose dates dynamically with a Slider?
http://community.wolfram.com/groups/-/m/t/1195481
I would like to select a date from a list of dates using a slider, and show the chosen date right underneath the slider in the form of a date string..
Take for instance the following simple list:
list={{2000, 1, 3}, {2000, 1, 4}, {2000, 1, 5}, {2000, 1, 6}, {2000, 1, 7}, {2000, 1, 10}, {2000, 1, 11}, {2000, 1, 12}, {2000, 1, 13}, {2000, 1, 14}}
So I could for instance choose with the slider the third element of this list, which is {2000, 1,5}, and then convert this with the command DateString[DatObject[{2000, 1, 7}]] to the data string "Wed 5 Jan 2000". Now I want this date string shown underneath the slider instead of the usual number, which in this case would be 3.
The slider would be for instance:
Slider[Dynamic[m],{1,10,1}
The problem is now that Dynamic[m] is not accepted by Part. With the command
list[[Dynamic[m]]]
one gets an error message that the result from the slider cannot be used as a part specification.
How do I solve this problem? Thanks in advance for your help.Laurens Wachters2017-10-01T20:35:36ZSemanticImport fails for every file in Mathematica 11.0
http://community.wolfram.com/groups/-/m/t/904715
This is a follow up on this [post][1].
Using SemanticImport on any file, even those mentioned in the Documentation examples e.g. :
SemanticImport["ExampleData/RetailSales.tsv"]
Gives an error:
**SemanticImport::unexpinvaliderr: Unexpected invalid input was detected. Processing will not continue**
I came across an issue with the SemanticImport as my previous attempt to import a large csv file caused a crash of the Mathematica Kernel and took Windows 10 Pro 64-bit with it as it consumed all remaining 4GB RAM.
The work-around mentioned in the aforementioned post still works i.e. make sure you change the path to the temp directory i.e.
Block[{$TemporaryDirectory = "C:\\temp"}, SemanticImport["ExampleData/RetailSales.tsv"]]
Is this a known bug?
Cheers,
Dave
[1]: http://community.wolfram.com/groups/-/m/t/819494?_19_redirect=http://community.wolfram.com/dashboard?p_p_id=3&p_p_lifecycle=0&p_p_state=maximized&p_p_mode=view&_3_groupId=0&_3_keywords=semanticimport&_3_struts_action=%252Fsearch%252Fsearch&_3_redirect=%252Fweb%252Fcommunity%252F%253Fsource%253DnavDave Middleton2016-08-13T23:48:12ZCreate and deploy your own paclets in the Workbench
http://community.wolfram.com/groups/-/m/t/961186
# References
[![enter image description here][7]][8]
- [GitLink for Wolfram Language][9]
- [What is a “Paclet”?][10]
- [What can I do with “Syntax Templates” section at start of Symbol Pages (in Workbench)?][11]
# Eclipse work flow
If necessary, install the Wolfram WorkBench Plugin for Eclipse.
http://support.wolfram.com/kb/27221
In Windows - Preferences - Wolfram - Special make the following changes
![enter image description here][1]
Apply and press OK. Then re-open preferences and go to Paclet Development. Enable function paclet support.
![enter image description here][2]
# Create a new application project
![enter image description here][3]
![enter image description here][4]
Open the ***PacletInfo.m*** file and useful buttons now appear.
![enter image description here][5]
Also edit your project properties or the nice buttons may vanish after a build or when you close the project.
![enter image description here][6]
# Build
Build your project and documentation as usual and then create your Paclet file and deploy.
# Install
You can install from a local file path, http or ftp as print definitions reveals.
PacletInstall[filepath]
Needs["GeneralUtilities`"]
PrintDefinitions["PacletInstall"]
PrintDefinitions["PacletManager`Manager`Private`installPacletFromFileOrURL"]
There is no current support for https but this can be patched or you can easily call PacletInstall after downloading and creating a new file name for the download. This could be handy if you wanted to install from GitHub.
[1]: http://community.wolfram.com//c/portal/getImageAttachment?filename=sdf34q5w6yethdgsdfa.png&userId=11733
[2]: http://community.wolfram.com//c/portal/getImageAttachment?filename=rthe567iteyrtq54htefadvs.png&userId=11733
[3]: http://community.wolfram.com//c/portal/getImageAttachment?filename=345tjhgfsdase56eutyjhstdgas.png&userId=11733
[4]: http://community.wolfram.com//c/portal/getImageAttachment?filename=safd345q65uyhrtgfdasr43q5ega.png&userId=11733
[5]: http://community.wolfram.com//c/portal/getImageAttachment?filename=asdf435657iifgshr54657eiutj.png&userId=11733
[6]: http://community.wolfram.com//c/portal/getImageAttachment?filename=fghu356rtgerfsgw6ejtrsa.png&userId=11733
[7]: http://community.wolfram.com//c/portal/getImageAttachment?filename=logo.png&userId=11733
[8]: https://github.com/WolframResearch/GitLink
[9]: https://github.com/WolframResearch/GitLink
[10]: http://mathematica.stackexchange.com/questions/1660/what-is-a-paclet
[11]: http://mathematica.stackexchange.com/questions/66754Emerson Willard2016-11-11T13:22:20ZExtract Images from particular page of PDF
http://community.wolfram.com/groups/-/m/t/1200163
Hi!
I am trying to extract the images stored on a particular page of a pdf. I can open the page using the following code:
Import["c:\\ABCDE.pdf", {"Pages", 4}]
How would I go about importing all the images only on this page? The below line extracts all the images from all pages:
Import["c:\\ABCDE.pdf", "Images"]
As I am working with a large file, I need to exatract the images on a page by page basis.
I hope someone can help!
Thanks and Regards,
Priyan.Priyan Fernando2017-10-09T11:18:49ZWhat is the logic of transparency handling by image-processing functions?
http://community.wolfram.com/groups/-/m/t/1195286
When working on [this][1] post I [discovered ][2] that starting from *Mathematica* 10.0 the behavior of such functions as `Blur`, `GaussianFilter`, `ImageConvolve` and some others was changed. Namely, they no longer affect alpha channel of an `Image` they are applied to. Unfortunately the Documentation is completely silent about this important change which has broken all dependent code, including [this][3] ingenious function written by [Heike][4].
My interpretation was that the purpose of this incompatible change is to make transparency handling by all image processing functions be consistent. In versions 8 and 9 `ImageAdjust`, `Dilation` and some other similar functions weren't applied to alpha channel. The consistent implementation is to make them all to ignore alpha channel or make them all to process alpha channel (or, better, make this behavior optional). But further investigation showed that even in the latest version 11.2.0 there are strongly related functions which still affect alpha channel: `ImageCorrelate` and `ImageFilter` (and may be others, I didn't test *every* function).
Is it a bug that `ImageCorrelate` and `ImageFilter` still affect alpha channel? If so, we should expect another code-breaking change in one of the future releases of *Mathematica*.
Or is it *by design* and we can rely on this functionality? If so, what is the logic behind this design decision? Currently I see no way to *predict* this behavior, and there is also no information in the Docs. Is there any method to know besides testing every function by hand?
<sub>*(Cross-posted on [Mathematica.SE][5].)*</sub>
[1]: http://community.wolfram.com/groups/-/m/t/1188397
[2]: https://mathematica.stackexchange.com/q/156210/280
[3]: https://mathematica.stackexchange.com/a/4155/280
[4]: https://mathematica.stackexchange.com/users/46/heike
[5]: https://mathematica.stackexchange.com/q/156384/280Alexey Popkov2017-10-01T00:46:47Z