Re: [Qgis-user] Basic Help

[Richard Duivenvoorde]

On 28-10-17 09:42, Phil (The Geek) Wyatt wrote:
> Here are a few solutions from memory...
> · search for and add points based on X,Y coordinates
> 
> o   cant remember this one at the moment but I think there is a plugin
> that makes this easier

Try 'Lat Lon Tools' plugin :-)

Regards,

Richard
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Re: [Qgis-user] Basic Help

[Bernd Vogelgesang]

Hi,

Am 27.10.2017, 19:29 Uhr, schrieb Louise Duffy :



I don't know if this is the correct format for asking these questions,  
so please re-direct me as needed.



I am used ArcMap for many years to perform pretty basic stuff, but I am  
not finding QGIS to be as easy of a transition as I had hoped. I am now  
self->employed, doing some part time consulting for a few clients and I  
do not have the budget to buy ESRI products, especially when QGIS has  
such promise.
QGIS is for free, but it will cost you sth neverthelless: Time (while  
ArcMap costs you money AND time)





In the past, my normal use of GIS was to pretty focused on being able to  
connect dots from GPS data, digitize features using aerial photography  
and other >basemaps. Producing a variety of maps for projects that  
included exported tables of that data to show coordinates, lengths, area  
or other characteristics.

I think this is what the majority of QGIS users do as well.



I downloaded QGIS version 2.14.19-Essen. I am not familiar with  
programming languages, scripts or other behind the scenes stuff. When I  
have looked at >tutorials QGIS has, the screens do not match what I see  
or the process does not work as expected. I don't know if I am missing  
something with the install or >just need a friendly guide to point the  
way.



QGIS has a very fast development, so resources often can't keep the pace  
and get outdated. But as Patrick mentioned, https://gis.stackexchange.com  
is good resource to find answers and learn, or even ask own questions  
(after proving that you could not find a suitable answer there).




Right now, I specifically need help with four things:

In some parts, QGIS workflows still require the use of plugins.


add basemaps from external sources (aerial, street, usgs quad),
For adding basemaps, install QuickkMapServices (which by default only  
ships a few basmaps, so you can extend it through the plugins settings:  
Settings/More services -> Get contributed pack)


ArcMap folks tend to think that the ESRI-way is the only valid way to do  
things. QGIS does not "pollute" your attribute table with the informations  
you are used to have and now ask for, but you can add them quickly.


calculate/display area of polygons in attribute table;
Open attribute table, open field calculator, create new field "area", pick  
format/field length/precision.
In the search field to the right, enter "area". The search shows you e.g.  
"$area" under "Geometry". Just double-click on $area", it shows up in the  
expression field -> OK


add X,Y coordinates of existing points to attribute table;
Do similar with a new x and y field: search for x, double-click $x (and  
have a look at all the other functions available) etc etc.


Or even easier:
Click Processing in the Menu bar, Activate the Toolbox, Search for "Add":  
Under QGIS geoalgorithms -> Vector table tools, you will find Export/Add  
geometry columns.
This will not change your original dataset, but creates a new temporary  
copy (which you will have to make permanent later by "Save as...)




search for and add points based on X,Y coordinates.
Right-click somewhere in the Menu bar and activate the "Advanced  
digitizing panel"

Make your point layer editable
enable advanced digitizing tools (look at the popup-hints that show when  
hovering the symbols. The x and y fields get active.
Enter your coordinates and lock them (with the lock symbol). You get a  
cross-hair showing the position.
Digitizing toolbar: add feature. Click somewhere in the canvas, the new  
point will be created at the cross-hair position.






Thanks!

Louise

Learn to search and use: Plugins Repository, Field calculator functions,  
Processing Toolbox functions!

Did I miss sth?

Cheers
Bernd


--
Bernd Vogelgesang
Siedlerstraße 2
91083 Baiersdorf/Igelsdorf
Tel: 09133-825374___
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Re: [Qgis-user] Basic Help

[Phil (The Geek) Wyatt]

Here are a few solutions from memory...

 

· add basemaps from external sources (aerial, street, usgs quad),

o   Check out a plugin called Quick Map Services and also once you have that 
loaded get the contributors pack that adds lots more sources for maps. Also use 
the search function within the plugin

· calculate/display area of polygons in attribute table

o   In the attribute table use the field calculator to add a new columns for 
ObjArea, and then check out the Geometry expressions $area and area

· add X,Y coordinates of existing points to attribute table

o   same as above but check the expressions $x, x $y, y

· search for and add points based on X,Y coordinates

o   cant remember this one at the moment but I think there is a plugin that 
makes this easier

 

There are also lots of great youtube videos for many QGIS functions

 

https://www.youtube.com/channel/UCrBM8Ka8HhDAYvQY1VX2P0w/videos 

 

Cheers - Phil

 

From: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] On Behalf Of Louise 
Duffy
Sent: Saturday, October 28, 2017 4:29 AM
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] Basic Help

 

I don't know if this is the correct format for asking these questions, so 
please re-direct me as needed.

 

I am used ArcMap for many years to perform pretty basic stuff, but I am not 
finding QGIS to be as easy of a transition as I had hoped. I am now 
self-employed, doing some part time consulting for a few clients and I do not 
have the budget to buy ESRI products, especially when QGIS has such promise. 

 

In the past, my normal use of GIS was to pretty focused on being able to 
connect dots from GPS data, digitize features using aerial photography and 
other basemaps. Producing a variety of maps for projects that included exported 
tables of that data to show coordinates, lengths, area or other characteristics.

 

I downloaded QGIS version 2.14.19-Essen. I am not familiar with programming 
languages, scripts or other behind the scenes stuff. When I have looked at 
tutorials QGIS has, the screens do not match what I see or the process does not 
work as expected. I don't know if I am missing something with the install or 
just need a friendly guide to point the way.

 

Right now, I specifically need help with four things: add basemaps from 
external sources (aerial, street, usgs quad), calculate/display area of 
polygons in attribute table; add X,Y coordinates of existing points to 
attribute table; search for and add points based on X,Y coordinates. 

 

Thanks!

Louise 

 

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Re: [Qgis-user] Basic Help

[Patrick Dunford]

Hi Louise

These are all fairly straightforward queries to work on, so I am sure
it is just a matter of learning the way the software works. I have been
using this software for about five years and it is one of the best open
source packages I have ever worked with.

It may be more useful for you to sign up to the GIS forum at
stackexchange (gis.stackexchange.com) where the web based format is
easier to work with.

On Fri, 2017-10-27 at 10:29 -0700, Louise Duffy wrote:
> I don't know if this is the correct format for asking these
> questions, so please re-direct me as needed.
>  
> I am used ArcMap for many years to perform pretty basic stuff, but I
> am not finding QGIS to be as easy of a transition as I had hoped. I
> am now self-employed, doing some part time consulting for a few
> clients and I do not have the budget to buy ESRI products, especially
> when QGIS has such promise. 
>  
> In the past, my normal use of GIS was to pretty focused on being able
> to connect dots from GPS data, digitize features using aerial
> photography and other basemaps. Producing a variety of maps for
> projects that included exported tables of that data to show
> coordinates, lengths, area or other characteristics.
>  
> I downloaded QGIS version 2.14.19-Essen. I am not familiar with
> programming languages, scripts or other behind the scenes stuff. When
> I have looked at tutorials QGIS has, the screens do not match what I
> see or the process does not work as expected. I don't know if I am
> missing something with the install or just need a friendly guide to
> point the way.
>  
> Right now, I specifically need help with four things: add basemaps
> from external sources (aerial, street, usgs quad), calculate/display
> area of polygons in attribute table; add X,Y coordinates of existing
> points to attribute table; search for and add points based on X,Y
> coordinates. 
>  
> Thanks!
> Louise
>  
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[Qgis-user] Basic Help

[Louise Duffy]

I don't know if this is the correct format for asking these questions, so 
please re-direct me as needed.

I am used ArcMap for many years to perform pretty basic stuff, but I am not 
finding QGIS to be as easy of a transition as I had hoped. I am now 
self-employed, doing some part time consulting for a few clients and I do not 
have the budget to buy ESRI products, especially when QGIS has such promise. 

In the past, my normal use of GIS was to pretty focused on being able to 
connect dots from GPS data, digitize features using aerial photography and 
other basemaps. Producing a variety of maps for projects that included exported 
tables of that data to show coordinates, lengths, area or other characteristics.

I downloaded QGIS version 2.14.19-Essen. I am not familiar with programming 
languages, scripts or other behind the scenes stuff. When I have looked at 
tutorials QGIS has, the screens do not match what I see or the process does not 
work as expected. I don't know if I am missing something with the install or 
just need a friendly guide to point the way.

Right now, I specifically need help with four things: add basemaps from 
external sources (aerial, street, usgs quad), calculate/display area of 
polygons in attribute table; add X,Y coordinates of existing points to 
attribute table; search for and add points based on X,Y coordinates. 

Thanks!
Louise 

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