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Concatenation of fieldvalue and fieldname (handling of NULL)
one label for two-lane roads (osm, qgis, postgis)Creating single null value for raster bordersQGIS combining categorized valuesHow to count the number of polygons within a grid?Removing Null Values and Slicing ResultsRepresenting NULL data for a numeric field in ArcGIS (symbology)Grouping values by type and counting themAverage of polygons within mask polygonNull handling in QGIS grid rank filterBlank values in attribute table don't work as null in QGIS?
I'm relatively new to QGIS and I want to tackle the problem below.
Let's say I have a trench contraining two types of ducts
Number of ducts can range
I have created two fields for said trench. (Type 1 and Type 2)
The values in each field are the numbers of each type of duct that the trench contains.
I would like to label it something like this (eg lets say that trench contains 2 ducts of type one and one duct of type 2)
Label: 2xType1,Type2
Also, what can i do if one of the values is NULL ?
In that case ( lets say type1 is NULL) I would like the label to be
Label:Type2
I am looking for a compact solution since the actual number of duct types is 5
qgis null concatenation
edited 2 hours ago
Vince
14.7k32749
asked 2 hours ago
SundrawSundraw
61
New contributor
Sundraw is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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add a comment |
I'm relatively new to QGIS and I want to tackle the problem below.
Let's say I have a trench contraining two types of ducts
Number of ducts can range
I have created two fields for said trench. (Type 1 and Type 2)
The values in each field are the numbers of each type of duct that the trench contains.
I would like to label it something like this (eg lets say that trench contains 2 ducts of type one and one duct of type 2)
Label: 2xType1,Type2
Also, what can i do if one of the values is NULL ?
In that case ( lets say type1 is NULL) I would like the label to be
Label:Type2
I am looking for a compact solution since the actual number of duct types is 5
qgis null concatenation
edited 2 hours ago
Vince
14.7k32749
asked 2 hours ago
SundrawSundraw
61
New contributor
Sundraw is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
2
What have you tried? You should be able to use the coalesce function in a label expression to hande nulls
– BERA
2 hours ago
add a comment |
I'm relatively new to QGIS and I want to tackle the problem below.
Let's say I have a trench contraining two types of ducts
Number of ducts can range
I have created two fields for said trench. (Type 1 and Type 2)
The values in each field are the numbers of each type of duct that the trench contains.
I would like to label it something like this (eg lets say that trench contains 2 ducts of type one and one duct of type 2)
Label: 2xType1,Type2
Also, what can i do if one of the values is NULL ?
In that case ( lets say type1 is NULL) I would like the label to be
Label:Type2
I am looking for a compact solution since the actual number of duct types is 5
qgis null concatenation
edited 2 hours ago
Vince
14.7k32749
asked 2 hours ago
SundrawSundraw
61
New contributor
Sundraw is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I'm relatively new to QGIS and I want to tackle the problem below.
Let's say I have a trench contraining two types of ducts
Number of ducts can range
I have created two fields for said trench. (Type 1 and Type 2)
The values in each field are the numbers of each type of duct that the trench contains.
I would like to label it something like this (eg lets say that trench contains 2 ducts of type one and one duct of type 2)
Label: 2xType1,Type2
Also, what can i do if one of the values is NULL ?
In that case ( lets say type1 is NULL) I would like the label to be
Label:Type2
I am looking for a compact solution since the actual number of duct types is 5
qgis null concatenation
qgis null concatenation
edited 2 hours ago
Vince
14.7k32749
asked 2 hours ago
SundrawSundraw
61
New contributor
Sundraw is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 2 hours ago
Vince
14.7k32749
asked 2 hours ago
SundrawSundraw
61
New contributor
Sundraw is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 2 hours ago
Vince
14.7k32749
edited 2 hours ago
Vince
14.7k32749
edited 2 hours ago
Vince
14.7k32749
14.7k32749
asked 2 hours ago
SundrawSundraw
61
New contributor
Sundraw is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 hours ago
SundrawSundraw
61
asked 2 hours ago
SundrawSundraw
61
61
New contributor
Sundraw is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Sundraw is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Sundraw is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
2
What have you tried? You should be able to use the coalesce function in a label expression to hande nulls
– BERA
2 hours ago
add a comment |
2
What have you tried? You should be able to use the coalesce function in a label expression to hande nulls
– BERA
2 hours ago
2
2
What have you tried? You should be able to use the coalesce function in a label expression to hande nulls
– BERA
2 hours ago
What have you tried? You should be able to use the coalesce function in a label expression to hande nulls
– BERA
2 hours ago
add a comment |
1 Answer
1
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oldest
votes
Maybe use something like the following:
replace(
if("id" > 0 and "id_1" > 0, "id" || 'x Type1, ' || "id_1" || 'x Type2',
if("id" = 0 or "id" IS NULL, "id_1" || 'x Type2',
if("id_1" = 0 or "id_1" IS NULL, "id" || 'x Type1', ''))), '1x', '')
answered 2 hours ago
JosephJoseph
57.5k7100197
add a comment |
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1 Answer
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active
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votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Maybe use something like the following:
replace(
if("id" > 0 and "id_1" > 0, "id" || 'x Type1, ' || "id_1" || 'x Type2',
if("id" = 0 or "id" IS NULL, "id_1" || 'x Type2',
if("id_1" = 0 or "id_1" IS NULL, "id" || 'x Type1', ''))), '1x', '')
answered 2 hours ago
JosephJoseph
57.5k7100197
add a comment |
Maybe use something like the following:
replace(
if("id" > 0 and "id_1" > 0, "id" || 'x Type1, ' || "id_1" || 'x Type2',
if("id" = 0 or "id" IS NULL, "id_1" || 'x Type2',
if("id_1" = 0 or "id_1" IS NULL, "id" || 'x Type1', ''))), '1x', '')
answered 2 hours ago
JosephJoseph
57.5k7100197
add a comment |
Maybe use something like the following:
replace(
if("id" > 0 and "id_1" > 0, "id" || 'x Type1, ' || "id_1" || 'x Type2',
if("id" = 0 or "id" IS NULL, "id_1" || 'x Type2',
if("id_1" = 0 or "id_1" IS NULL, "id" || 'x Type1', ''))), '1x', '')
answered 2 hours ago
JosephJoseph
57.5k7100197
Maybe use something like the following:
replace(
if("id" > 0 and "id_1" > 0, "id" || 'x Type1, ' || "id_1" || 'x Type2',
if("id" = 0 or "id" IS NULL, "id_1" || 'x Type2',
if("id_1" = 0 or "id_1" IS NULL, "id" || 'x Type1', ''))), '1x', '')
answered 2 hours ago
JosephJoseph
57.5k7100197
answered 2 hours ago
JosephJoseph
57.5k7100197
answered 2 hours ago
JosephJoseph
57.5k7100197
answered 2 hours ago
JosephJoseph
57.5k7100197
57.5k7100197
add a comment |
add a comment |
Sundraw is a new contributor. Be nice, and check out our Code of Conduct.
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2
What have you tried? You should be able to use the coalesce function in a label expression to hande nulls
– BERA
2 hours ago