PHiLiP | Parallel High-Order Library | GPU library
kandi X-RAY | PHiLiP Summary
kandi X-RAY | PHiLiP Summary
Parallel High-Order Library for PDEs through hp-adaptive Discontinuous Galerkin methods
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Trending Discussions on PHiLiP
QUESTION
I have an R program that generates a lot of text using writeLines, cat and print, and I would like to be able to switch the output back and forth between a text file and the console. A minimal example follows:
...ANSWER
Answered 2021-Jun-11 at 04:02You can also use stdout()
as a connection for the default output. You can do something like
QUESTION
I am encountering an issue with Neo4j where the results for the same query change after applying the below:
- an index on a property for nodes with a given label
- a constraint that asserts the existence of the same property for nodes with the same label as above
- Neo4j version: 4.2.1 Enterprise, default runtime (slotted)
- Neo4j Desktop 1.4.1
- Operating system: macOS Big Sur Version 11.4
Create one set of nodes and relationships by running the following:
...ANSWER
Answered 2021-Jun-09 at 22:27Yes, this is a good illustration of a bug that was fixed in Neo4j 4.2.3, and happens when the label is present in an OPTIONAL MATCH on a previously-bound variable.
From the changelog:
Fixed a bug where an index scan would be used to solve an OPTIONAL MATCH incorrectly.
https://github.com/neo4j/neo4j/wiki/Neo4j-4.2-changelog#423
The workaround until the fix was to remove the redundant label.
We highly recommend staying updated to at least the latest patch for your minor version to avoid known and fixed bugs.
QUESTION
I'm quite new to DICOM and I'm having difficulties in understanding the difference between rescaling and scaling factors.
To transform the stored values, in a MRI DICOM image, into a quantitatively meaningful image, it seems that I should use the Rescale Slope (0028, 1053)
and the Rescale Intercept (0028, 1052)
.
However, for the same transformation, some MRI manufacturers (e.g. Philips) provide an additional Private Tag - the Scale Slope
. In that case, the transformation requires the use of, not only the Rescale Slope
and Rescale Intercept
, but also the Scale Slope
.
I can't understand what exactly is this Scale Slope
. Can anyone please provide any help?
ANSWER
Answered 2021-Jun-08 at 17:04The Rescale Intercept (0028,1052)
and the Rescale Slope (0028,1053)
are standard DICOM tags.
As you already said in question, the Scale Slope
(probably (2005,100E)
) is a Private Tag - specific to the Equipment Manufacturer. So, only manufacturer may say something reliable about this.
Private tags do not have standard names; generally, manufacturers mention the details of private tags they created in their DICOM Conformance Statement or other similar document. They may also name the tag in that document. Please refer to this answer for more details.
Now, to your question -- what is the difference?
Considering what I said above, it is hard to answer this question. Meaning and usage of standard tags can be found in standards. It is not the case with private tags. You have to go through vendor specific documents to understand it in details (if they mention it in details).
Even so, a quick googling give me this and this. One of the post in thread discusses about usage of Scale Slope
in a mathematical formula.
If you open a PAR/REC header you will see the Phiips description of these values
//# === PIXEL VALUES =============================================================
//# PV = pixel value in REC file, FP = floating point value, DV = displayed value on console
//# RS = rescale slope, RI = rescale intercept, SS = scale slope
//# DV = PV * RS + RI FP = DV / (RS * SS)
and
Inputs:
R = raw stored value of voxel in DICOM without scaling
WS = RealWorldValue slope (0040,9225) "PhilipsRWVSlope"
WI = RealWorldValue intercept (0040,9224) "PhilipsRWVIntercept"
RS = rescale slope (0028,1053) "PhilipsRescaleSlope"
RI = rescale intercept (0028,1052) "PhilipsRescaleIntercept"
SS = scale slope (2005,100E) "PhilipsScaleSlope"
Outputs:
W = real world value
P = precise value
D = displayed value
Formulas:
W = R * WS + WI
D = R * RS + RI
P = D / (RS * SS)
QUESTION
I am working out of "HTML5 and CSS5 Illustrated Complete" Second Edition by Sasha Vodnik. I did the initial Unit D example to a Tee, however logo styling and the positioning aren't applying correctly or at all.
...ANSWER
Answered 2021-Feb-16 at 19:29Add top: 0;
to your header in CSS. It should look like this:
QUESTION
Minimal example: I have a dataframe whose column names are non-syntactic - they start with a number
...ANSWER
Answered 2021-May-26 at 03:07diff
doesn't work on dataframes. You can apply it to multiple columns with across
-
QUESTION
first name Middle Name Last Name UperCase
martin Bell MARK N
JACK IAN CHAPPEL Y
PHILIP JIMMY DAVID Y
...ANSWER
Answered 2021-May-25 at 02:12You need to give alias name, and CId is not defined anywhere inside the subquery, and what is A?
QUESTION
When I run my code it throws a segmentation fault and I have tried rewriting the code several times. Still to no avail, it won't even run. The segmentation fault happens as soon as my program is launched. What it's supposed to do is print a path on screen using the ncurses library in Linux, from the given coordinates. Here is the problematic snippet with the lines where gdb said the segmentation fault was, also it (snippet) reproduces the problem.
EDIT: This will help explain what I'm trying to do, but using dynamic arrays. Breadth First Search
EDIT 2: The variable frontier is supposed to keep track of the X and Y values at a specific index. The add_neighbors function is there to add all four neighbors (providing they aren't already added) to the frontier and came_from arrays.
frontier[index][0] is X value.
frontier[index][1] is Y value.
The before the first while loop I set the start position x1 and y1. During the first while loop, it increments getting the new coordinates from the frontier, then processing and adding to came_from array.
For example:
(x1,y1) (x1+1,y1)
(x1,y1+1) (x1+1,y1+1)
(x1,y2) (x2,y2)
I'm trying to get from (x1,y1) to (x2,y2). Sure hope that explains it better. What I'm trying to implement is a Breadth First Search (BFS) algorithm. Using two arrays, one is frontier (keeps track of visited positions) and came_from (keeps track of X and Y the path from x1,y1 to x2,y2). Updated the code to reflect the first answer. Plus added a comment to explain where the error might be, not really sure but I've been debugging it. It looks like the came_from array never gets set with x and y.
The Code:
...ANSWER
Answered 2021-May-23 at 17:26Some of the allocation sizes are incorrect:
frontier = malloc(sizeof(frontier) * MAXHEIGHT * MAXWIDTH);
should be
QUESTION
I've got a List of dict like below.
The structure of it is similar to a tree in which each node has an arbitray number of children. i want to select the node that has a matching 'name' that is provided as input.
...ANSWER
Answered 2021-May-23 at 16:45You can use recursive generator function to search for the nodes. For example:
QUESTION
I'm in the process of making my own philips hue controller via javascript. and I am trying to identify groups and light id's. But i can't figure out how I get the JSON id of a group or light.
I get an http answer in JSON format what looks like this:
...ANSWER
Answered 2021-May-19 at 14:58What you have there in the API response is an object. Right now you are only accessing its values, not yet its keys. You can change the way your for loop works to use the object keys as index instead. Then i
will be the room id you are looking for.
QUESTION
Im trying to convert a list of tuples to a txt file and do a input validation for two inputs. BTW, Im trying to do it without and CSV modules. I got this list of tuples:
...ANSWER
Answered 2021-May-15 at 13:00The issue here is that i
in your second for
loop is a tuple
as described in your traceback. You are in essence trying to do the following which errors out:
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