I am having extreme difficulty making this doctrine2 extension works.
It is https://github.com/djlambert/doctrine2-spatial and theres not a lot of doc on how to create a polygon. I got the config file working and all but I am struggling with creating the actual polygon.
array:564 [
0 => array:2 [
0 => -73.698313
1 => 45.546876
]
1 => array:2 [
0 => -73.69813
1 => 45.546916
]
2 => array:2 [
0 => -73.697656
1 => 45.546899
]
3 => array:2 [
0 => -73.697413
1 => 45.546899
]
$poly = new Polygon($array);
[CrEOF\Spatial\Exception\InvalidValueException]
Invalid Polygon Point value of type "double"
This is the actual error Im getting. I tried creating points instead because apparently it doesn't like doubles.
$p = new Point($coord);
$temp[] = $p;
$poly = new Polygon($temp);
[CrEOF\Spatial\Exception\InvalidValueException]
Invalid Polygon LineString value of type "CrEOF\Spatial\PHP\Types\Geometry\Point"
After that, I was like ok, lets create a line string object and pass it.
$line = new LineString($points);
$poly - new Polygon($line);
[Symfony\Component\Debug\Exception\ContextErrorException]
Catchable Fatal Error: Argument 1 passed to CrEOF\Spatial\PHP\Types\AbstractPolygon::__construct() must be of the type array, object given, called in /Library/Web Server/Documents/mg/src/Momoa/ImmobilierBundle/Entity/geography/Quartier.php on line 131 and defined
Im just lost right now, the only thing I wanted was to store polygons in the database and call spatial functions such as CONTAINS. Do you have any recommendation or such other things to make all of this work.
After digging through the source code I found this validate function which seems to be the problem
case (is_array($point) && count($point) == 2 && is_numeric($point[0]) && is_numeric($point[1])):
return array_values($point);
break;
default:
throw InvalidValueException::invalidType($this, GeometryInterface::POINT, $point);
}
The way I'm understanding this is that the extension do not accept points that have decimal values ?! Huh, Does that mean I need to convert my coordinates to 2 integers ?!
I will post the solution I found. Basically you need to create your polygon like this
$line = new LineString($coords);
$poly = new Polygon(array($line));
//Or you can do it like this
$coords[0] = $coords;
$poly = new Polygon($coords);
//Following if you wanna use MBRContains or Contains
$dql = "SELECT p FROM polygon p WHERE MBRContains(p.geometry, GeomFromText('Point($lat $lng)'))=1";
//Dont use GeomFromText(:point), and then $point = new Point(array($lat,$lng));
Basically good luck guys, that library is useful but the documentation is BAD !
Spent the whole day on that yesterday !!
You can create it by passing data in constructor.
But the problem is that you should have a valid polygon data:
$p = new Polygon([[[lat1, lng1], [lat2, lng2], [lat3, lng3], [lat1, lng2]]]);
Be sure that in the Polygon
there are three arrays — array of lines, where line is an array of points, where every point is an array.
the path is closed — the last point equals to the first one.
The same truth for MultiPolygon but + one more array. F.e.
[[[["32.699005219026645","-117.18222600929262"],["32.694563070816095","-117.18437177650453"],["32.697687043641835","-117.17149717323305"],["32.699005219026645","-117.18222600929262"]]]]
Related
I'm creating a program in Q#.
Problem
You are given two qubits in state |00⟩. Your task is to create the following state on them:
1/3–√(|00⟩+|01⟩+|10⟩)
You have to implement an operation which takes an array of 2 qubits as an input and has no output. The "output" of your solution is the state in which it left the input qubits.
Code
namespace Solution {
open Microsoft.Quantum.Primitive;
open Microsoft.Quantum.Canon;
open Microsoft.Quantum.Math;
open Microsoft.Quantum.Convert;
operation Solve (qs : Qubit[]) : Unit
{
body
{
Ry(ArcCos(Sqrt(2.0/3.0))*2.0,qs[0]);
(ControlledOnInt(0,H))([qs[0]],qs[1]);
}
}
}
But when I run it show me the following error.
Error
CSC : error CS5001: Program does not contain a static 'Main' method suitable for an entry point
[C:\Users\Pawar\Desktop\HK\codeforces\Q#\Solution\Solution.csproj]
So I tried to put EntryPoint() before the method declaration . Which shows me different error as
error QS6231: Invalid entry point. Values of type Qubit may not be used as arguments or return values to entry points. [C:\Users\Pawar\Desktop\HK\codeforces\Q#\Solution\Solution.csproj]
Please help me how to run it properly ?
thanks ✌️
In order to run a Q# program as an executable, you need to have an #EntryPoint() operation defined. You can read more in this excellent blog post: https://qsharp.community/blog/qsharp-entrypoint/.
Specifically, in your case, the error message indicates that Qubit[] is not a valid parameter to the main entry point of your program. Which makes sense, because it doesn't make sense to pass an array of qubits when executing a program from the command line. And also, your operation doesn't print anything or return any results, so you won't be able to see what it's doing.
You should probably create an #EntryPoint() wrapper operation that invokes your existing operation with the appropriate parameters, maybe prints some diagnostics, and then returns some result. In your case, you could perhaps do something like this (note the additional namespaces you need to open):
open Microsoft.Quantum.Diagnostics;
open Microsoft.Quantum.Measurement;
#EntryPoint()
operation SolveForTwoQubits() : Result[]
{
using (qubits = Qubit[2])
{
Solve(qubits); // invoke your existing Solve operation
DumpMachine(); // outputs the state of your qubits
let results = MultiM(qubits); // measure the qubits
ResetAll(qubits); // reset the qubits to the initial state
return results; // return the measured results
}
}
This will give some output that looks like:
# wave function for qubits with ids (least to most significant): 0;1
∣0❭: 0.577350 + 0.000000 i == ******* [ 0.333333 ] --- [ 0.00000 rad ]
∣1❭: 0.577350 + 0.000000 i == ******* [ 0.333333 ] --- [ 0.00000 rad ]
∣2❭: 0.577350 + 0.000000 i == ******* [ 0.333333 ] --- [ 0.00000 rad ]
∣3❭: 0.000000 + 0.000000 i == [ 0.000000 ]
[Zero,One]
I have a problem where I have a list of fields from a table (not static, can be modified by user), and I need to generate a report using these user selected fields. The report can show all the rows, no need for aggregation or filtering.
I thought I could create a report layout then using a filemaker script to populate it but can't seem to find the right commands, can someone let me know how I could achieve this?
I'm using filemaker pro 18 advanced
Thanks in advance!
EDIT: Since you want a dynamic report, then I recommend you look up a technique called "Virtual List" for rendering the data.
Here's an example script that iterates over a found set of records and builds the virtual list data in a variable (it doesn't show how to render it though):
# Field names and delimiter
Set Variable [ $delim ; Value: Char(9) // tab character ]
# Set these dynamically with a script parameter
Set Variable [ $fields ; Value: List ( "Contacts::nameFirst" ; "Contacts::nameCompany" ; "Contacts::nameLast" ) ]
Set Variable [ $fieldCount ; Value: ValueCount ( $fields ) ]
Go to Layout [ “Contacts” (Contacts) ; Animation: None ]
Show All Records
Go to Record/Request/Page [ First ]
# Loop over all the records and append a row in the $data variable for each
Set Variable [ $data ; Value: "" ]
Loop
# Get the delimited field values
Set Variable [ $i ; Value: 0 ]
Set Variable [ $row ; Value: "" ]
Loop
Exit Loop If [ Let ( $i = $i + 1 ; $i > $fieldCount ) ]
Set Variable [ $value ; Value: GetField ( GetValue ( $fields ; $i ) ) ]
Insert Calculated Result [ Target: $row ; If ( $i > 1 ; $delim ) & $value ]
End Loop
enter code here
# Append the new row of data to the list variable
Insert Calculated Result [ Target: $data ; If ( Get ( RecordNumber ) > 1 ; ¶ ) & $row ]
Go to Record/Request/Page [ Next ; Exit after last: On ]
End Loop
# Save to a global variable to show in a virtual list layout
Set Variable [ $$DATA ; Value: $data ]
Exit Script [ Text Result: ]
please note this code is just one of many possible formats the virtual list can take. A lot of people, myself included, prefer to use JSON objects or arrays for each row of the list since it automatically handle field values with carriage returns. This is sort of the old-fashioned way. Kevin Frank at FileMaker Hacks has some good recent articles about virtual list techniques if you're interested.
PS, another great technique for rendering table data dynamically is to collect the data in a JSON array and render it in a webviewer with https://datatables.net/
I did something like this for the oncology department of UM om 1980 or so using 4th Dimension and a new plug in that used one line of code to create a web browser with all the functions that a doctor might want. The data was placed inside a variable as it was sent/returned and 4D could use a variable in the report to display the data.
FileMaker does not have this ability built in as 4D did so you will have to do it yourself.JSON is the most likely tool that I am familiar with. YouTube has many videos on JSON.
You have two classes of variables for your report: Column headers and column data to display. Fortunately Filemaker is quite good and very easy to design. Just make a typical report and replace the text/header or field names with a JSON variable or any. $ColumnName = JSON variable.
Create a JSON calculated field in the database. In that calculated field set the JSON variable and this can be used for all of the columns.
This is the essence of the idea with the final result to be determined by you. What you are asking for is not easy and would require serious work by a skilled JSON scripter.
I am trying to figure out how to have aggregate functions in the having clause with CakePHP's query builder.
Background: the intent is to correct all rows in a table with compound primary-keys (page-ID and URL) such that each page-ID-group has only one default video. There are some groups with no, and some groups with more than one "default" row, which needs to be corrected. I've figured out all the steps – except for this detail.
This is the query that I'm trying to build.
SELECT
video_page_id, video_url
FROM page_video
WHERE
video_page_id IN (
SELECT video_page_id
FROM page_video
GROUP BY video_page_id
HAVING SUM(video_is_default) < 1
)
AND video_order = 0
;
And this is what I have built:
// sub-select: all groups that have too few defaults.
// Returns list of page-IDs.
$qb = $this->getQueryBuilder();
$group_selection = $qb
->select(array(
'video_page_id',
))
->from('page_video')
->group('video_page_id')
->having(array(
'1 >' => $qb->func()->sum('video_is_default'),
))
;
// sub-select: compound-primary-key identifiers of all rows where
// `video_is_default` has to be modified from `0` to `1`.
// Returns list of two columns.
$qb = $this->getQueryBuilder();
$modifiable_selection = $qb
->select(array(
'video_page_id',
'video_url',
))
->from('page_video')
->where(array(
'video_page_id IN' => $group_selection,
'video_order = 0',
))
;
But then I get this exception: Column not found: 1054 Unknown column '1' in 'having clause'
The crux is the HAVING clause. I basically don't know how to combine the aggregate function with the attribute-value properties of an array. Usually, in order to craft lower/greater-than clauses, you write it like this: array('col1 >' => $value). But here, I needed to flip the equation because the complex expression can't fit into an array key. And now the 1 gets interpreted as a column name.
Writing it as a concatenated string doesn't seem to help either.
array(
$qb->func()->sum('video_is_default') .' > 1',
)
Exception: PHP Recoverable fatal error: Object of class Cake\Database\Expression\FunctionExpression could not be converted to string
I know I could do …
SELECT (…), SUM(video_is_default) AS default_sum FROM (…) HAVING default_sum < 1 (…)
… but then the sub-select column count doesn't match anymore.
Exception: ERROR 1241 (21000): Operand should contain 1 column(s)
I feel silly for figuring out the solution so soon after asking the question.
The lt method acccepts complex values as the first parameter.
->having(function($exp, $qb) {
$default_sum = $qb->func()->sum('video_is_default');
return $exp->lt($default_sum, 1);
})
I'm have a list with string types and i want to get each one that have maximum of occurence element grouped by another column. I'm trying to do this by linqu expression but it doesn't work. Is it possible to run my code that i show below ?
#test=(from a in #data
group a by new {a.PostCode}
into obj
select obj).ToDictionary(x => x.Key,x=>x.ToList()
.Select(y=>y.Statistic).GroupBy(s => s)
.OrderByDescending(s => s.Count())
.First().Key);
EDIT: I accidentally misrepresented the problem when trying to pare-down the example code. A key part of my code is that I am attempting to sort the array after adding elements to it. The hang appears on sort, not insert. The following abstracted code will consistently hang:
<?=
local('a' = array)
#a->insert('test1' = map('a'='1'))
#a->insert('test2' = map('b'='2')) // comment-out to make work
#a->sort
#a
?>
I have a result set for which I want to insert a pair of values into an array for each unique key, as follows:
resultset(2) => {
records => {
if(!$logTypeClasses->contains(field('logTypeClass'))) => {
local(i) = pair(field('logTypeClass'), map('title' = field('logType'), 'class' = field('logTypeClass')))
log_critical(#i)
$logTypeClasses->insert(#i) // Lasso hangs on this line, will return if commented-out
}
}
}
Strangely, I cannot insert the #i local variable into thread variable without Lasso hanging. I never receive an error, and the page never returns. It just hangs indefinitely.
I do see the pairs logged correctly, which leads me to believe that the pair-generating syntax is correct.
I can make the code work as long as the value side of the pair is not a map with values. In other words, it works when the value side of the pair is a string, or even an empty map. As soon as I add key=value parameters to the map, it fails.
I must be missing something obvious. Any pointers? Thanks in advance for your time and consideration.
I can verify the bug with the basic code you sent with sorting. The question does arise how exactly one sorts pairs. I'm betting you want them sorted by the first element in the pair, but I could also see the claim that they should be sorted by last element in the pair (by values instead of by keys)
One thing that might work better is to keep it as a map of maps. If you need the sorted data for some reason, you could do map->keys->asArray->sort
Ex:
local(data) = map('test1' = map('a'=2,'b'=3))
#data->insert('test2' = map('c'=33, 'd'=42))
local(keys) = #data->keys->asArray
#keys->sort
#keys
Even better, if you're going to just iterate through a sorted set, you can just use a query expression:
local(data) = map('test1' = map('a'=2,'b'=3))
#data->insert('test2' = map('c'=33, 'd'=42))
with elm in #data->eachPair
let key = #elm->first
let value = #elm->second
order by #key
do { ... }
I doubt you problem is the pair with map construct per se.
This test code works as expected:
var(testcontainer = array)
inline(-database = 'mysql', -table = 'help_topic', -findall) => {
resultset(1) => {
records => {
if(!$testcontainer->contains(field('name'))) => {
local(i) = pair(field('name'), map('description' = field('description'), 'name' = field('name')))
$testcontainer->insert(#i)
}
}
}
}
$testcontainer
When Lasso hangs like that with no feedback and no immediate crash it is usually trapped in some kind of infinite loop. I'm speculating that it might have to do with Lasso using references whenever possible. Maybe some part of your code is using a reference that references itself. Or something.