Андрей Смирнов
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Расширение файла ngw

Filters¶

Vector and PostGIS layers support SetIgnoredFields method. When this method
executes any cached features will be freed.

Vector and PostGIS layers support SetAttributeFilter and
SetSpatialFilter methods. The attribute filter will evaluate at server side
if condition is one of following comparison operators:

Also only AND operator without brackets supported between comparison. For example,

FIELD_1 = 'Value 1'
FIELD_1 = 'Value 1' AND FIELD_2 > Value 2

In other cases attribute filter will evaluate on client side.

You can set attribute filter using NextGIS Web native format. For
example,

NGWfld_FIELD_1=Value 1&fld_FIELD_2__gt=Value 2

Don’t forget to add ‘NGW:’ perefix to where clause and ‘fld_’ prefix to
field name.

Dataset supports ExecuteSQL method. Only the following queries are
supported:

  • DELLAYER: layer_name; — delete layer with layer_name.

  • DELETE FROM layer_name; — delete any features from layer with
    layer_name.

  • DROP TABLE layer_name; — delete layer with layer_name.

  • ALTER TABLE src_layer RENAME TO dst_layer; — rename layer.

  • SELECT field_1,field_2 FROM src_layer WHERE field_1 = ‘Value 1’ AND
    field_2 = ‘Value 2’;

Metadata¶

NextGIS Web metadata are supported in datasource, vector, PostGIS,
raster layers and styles. Metadata are stored at specific domain “NGW”.
NextGIS Web supported metadata are strings and numbers. Metadata keys
with decimal numbers will have suffix .d and for real numbers —
.f. To create new metadata item, add new key=value pair in NGW
domain using the SetMetadataItem function and appropriate suffix. During
transferring to NextGIS Web, suffix will be omitted. You must ensure
that numbers correctly transform from string to number.

Resource description and key map to appropriate description and
keyname metadata items in default domain. Changing those metadata
items will cause an update of resource properties.

Resource creation date, type and parent identifier map to appropriate
read-only metadata items creation_date, resource_type and
parent_id in default domain.

Vector layer field properties (alias, identifier, label field, grid
visibility) map to layer metadata the following way:

About

The main theme of the fifth NetGloW held in 2020 engages with the notion of context. It is the context that largely molds understanding of a specific relation and, thereby, of a particular network. We propose to discuss different types of networks – would these be personal, symbolic, material-object, organizational, urban, regional, or state networks – in their situational, cultural, historical, institutional, temporal, spatial and professional contexts. Conference participants are invited to reflect, on the one hand, how within and across these and numerous other kinds of contexts networks are defined, interpreted, operated and inhabited and, on the other hand, how networks affect and transform their contexts in return. On top of that, various types of networks comprise the contexts of each other, thus defining each other and co-evolving, like cultural networks express the meaning of interpersonal ties which, in turn, mold them as individuals negotiate meanings. We encourage papers on theoretical conceptualizations of the interplay between networks and their contexts, on the methods to incorporate peculiarities of contexts in network analysis – especially those drawing on interpretive approaches, mixed techniques and subjective meanings of research participants – and on substantive applications examining networks in specific empirical contexts. Papers utilizing data on European societies or dealing with issues topical for Europe are particularly welcomed.
The core subject areas of the NetGloW conference series remain the same in 2020, as well as the overall approach: The focus on advances in network analysis combining different types of methods and data to address the challenges in studying various kinds of networks, compared across cultures, societies, states, economies, and cities, – with a primary focus on European societies. Like before, a particular emphasis is on linkages between theory, method and applications, considering how theory-driven principles can be tested and which settings are suitable for such investigations. The conference will offer a coherent set of sessions and workshops corresponding to this overall approach. Simultaneously, once more NetGloW invites proposals from the community of network scholars on sessions and workshops they would like to bring to the conference, both in line with the proposed main topic and in addition to it.

🚫 Расширение файла .ngw часто дается неправильно!

По данным Поиск на нашем сайте эти опечатки были наиболее распространенными в прошлом году:

bgw, gw, jgw, mgw, nbw, nfw, ng, nga, ngd, nge, ngs, nnw, nrw, ntw, nw

Это возможно, что расширение имени файла указано неправильно?

Мы нашли следующие аналогичные расширений файлов в нашей базе данных:

.ng
Norton Guide

.nrw
Nikon RAW Image

.nge
neXus Personal Security Client Data

.jgw
ArcGIS JPEG World File

.nw
GraalOnline Level Data

.nw
NWChem Input File

.nrw
Nero WMA CD-Rom Compilation

.ngd
Xilinx ISE Native Generic Database

.mgw
Microgateway Policy Implementation Data

.nwg
NetEase Game Replay

Не удается открыть файл .ngw?

Если дважды щелкнуть файл, чтобы открыть его, Windows проверяет расширение имени файла. Если Windows распознает расширение имени файла, файл открывается в программе, которая связана с этим расширением имени файла. Когда Windows не распознает расширение имени файла, появляется следующее сообщение:

Windows не удается открыть этот файл: пример.ngw Чтобы открыть этот файл, Windows необходимо знать, какую программу вы хотите использовать для его открытия…

Если вы не знаете как настроить сопоставления файлов .ngw, проверьте FAQ.

Можно ли изменить расширение файлов?

Изменение имени файла расширение файла не является хорошей идеей. Когда вы меняете расширение файла, вы изменить способ программы на вашем компьютере чтения файла. Проблема заключается в том, что изменение расширения файла не изменяет формат файла.

Если у вас есть полезная информация о расширение файла .ngw, напишите нам!

Оцените нашу страницу NGW

Пожалуйста, помогите нам, оценив нашу страницу NGW в 5-звездочной рейтинговой системе ниже. (1 звезда плохая, 5 звезд отличная)

<< Расширение файла .ngt

Расширение файла .nh >>

Examples¶

Read datasource contents (1730 is resource group identifier):

ogrinfo -ro NGWhttps//demo.nextgis.comresource1730

Read layer details (1730 is resource group identifier, Parks is vecror layer
name):

ogrinfo -ro -so NGWhttps//demo.nextgis.comresource1730 Parks

Creating and populating a vector layer from a shapefile in existing resource
group with identifier 1730. New vector layer name will be “some new name”:

ogr2ogr -f NGW -nln "some new name" -update -doo "BATCH_SIZE=100" -t_srs EPSG3857 "NGW:https://demo.nextgis.com/resource/1730" myshapefile.shp

Warning

The -update key is mandatory, otherwise the destination datasource will
silently delete. The -t_srs EPSG:3857 key is mandatory because vector
layers spatial reference in NextGIS Web can be only in EPSG:3857.

Note

The -doo “BATCH_SIZE=100” key is recommended for speed up feature transferring.

Creating and populating a vector layer from a shapefile in new resource
group with name “new group” and parent identifier 1730. New vector layer name
will be “some new name”:

Рейтинг автора
5
Материал подготовил
Максим Иванов
Наш эксперт
Написано статей
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