How to add conditions in LATEX macros?
I would like to create custom macros with conditions.
For example, I would like to add an "if-condition" to a macro that I created to write derivatives of any order in relation to a single variable.
Here is the current code of my macro:
newcommand{df}{mathrm{d}}
newcommand{drv}[3]{dfrac{df #2^#1}{df #3^#1}}
The first argument #1 is the order of derivation, the second #2 the function that we take the derivative and the third #3 the variable of derivation.
For example,
drv{n}{f}{x}
will give
I would like to change this code so that it don't display the derivation order #1 if it is equal to 1. But I don't know the syntax, this is why I need your help. I want to write something like
newcommand{drv}[3]{
if #1=1
dfrac{df #2}{df #3}
else
dfrac{df ^#1 #2}{df #3^#1}
}
Thank you for your help, have a good day.
macros conditionals condition
edited 24 mins ago
Christian Hupfer
148k14193387
asked 1 hour ago
Loïc
135
New contributor
Loïc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
|
show 2 more comments
I would like to create custom macros with conditions.
For example, I would like to add an "if-condition" to a macro that I created to write derivatives of any order in relation to a single variable.
Here is the current code of my macro:
newcommand{df}{mathrm{d}}
newcommand{drv}[3]{dfrac{df #2^#1}{df #3^#1}}
The first argument #1 is the order of derivation, the second #2 the function that we take the derivative and the third #3 the variable of derivation.
For example,
drv{n}{f}{x}
will give
I would like to change this code so that it don't display the derivation order #1 if it is equal to 1. But I don't know the syntax, this is why I need your help. I want to write something like
newcommand{drv}[3]{
if #1=1
dfrac{df #2}{df #3}
else
dfrac{df ^#1 #2}{df #3^#1}
}
Thank you for your help, have a good day.
macros conditionals condition
edited 24 mins ago
Christian Hupfer
148k14193387
asked 1 hour ago
Loïc
135
New contributor
Loïc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
@ChristianHupfer Thank you. I know but I would like to create my own macros, this is just a simple example to understand the use of conditions.
– Loïc
57 mins ago
There already existesdiffanddiffcoeffpackages which already can do that (and more: they consider the case of partial derivatives of any order). Why reinvent the wheel?
– Bernard
45 mins ago
@Bernard the OP said this was just a specific example of a more general question about writing macros.
– alephzero
41 mins ago
@Bernard I think the question of the OP goes more in the direction of 'How to create macros with conditions?' The derivative is just an example, so using a package will not help him in this case
– caverac
41 mins ago
@Bernard thank you for introducing me to these packages. Indeed, I was mainly looking to know how to use "if-conditions", the derivation was only one example.
– Loïc
38 mins ago
|
show 2 more comments
I would like to create custom macros with conditions.
For example, I would like to add an "if-condition" to a macro that I created to write derivatives of any order in relation to a single variable.
Here is the current code of my macro:
newcommand{df}{mathrm{d}}
newcommand{drv}[3]{dfrac{df #2^#1}{df #3^#1}}
The first argument #1 is the order of derivation, the second #2 the function that we take the derivative and the third #3 the variable of derivation.
For example,
drv{n}{f}{x}
will give
I would like to change this code so that it don't display the derivation order #1 if it is equal to 1. But I don't know the syntax, this is why I need your help. I want to write something like
newcommand{drv}[3]{
if #1=1
dfrac{df #2}{df #3}
else
dfrac{df ^#1 #2}{df #3^#1}
}
Thank you for your help, have a good day.
macros conditionals condition
edited 24 mins ago
Christian Hupfer
148k14193387
asked 1 hour ago
Loïc
135
New contributor
Loïc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I would like to create custom macros with conditions.
For example, I would like to add an "if-condition" to a macro that I created to write derivatives of any order in relation to a single variable.
Here is the current code of my macro:
newcommand{df}{mathrm{d}}
newcommand{drv}[3]{dfrac{df #2^#1}{df #3^#1}}
The first argument #1 is the order of derivation, the second #2 the function that we take the derivative and the third #3 the variable of derivation.
For example,
drv{n}{f}{x}
will give
I would like to change this code so that it don't display the derivation order #1 if it is equal to 1. But I don't know the syntax, this is why I need your help. I want to write something like
newcommand{drv}[3]{
if #1=1
dfrac{df #2}{df #3}
else
dfrac{df ^#1 #2}{df #3^#1}
}
Thank you for your help, have a good day.
macros conditionals condition
macros conditionals condition
edited 24 mins ago
Christian Hupfer
148k14193387
asked 1 hour ago
Loïc
135
New contributor
Loïc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 24 mins ago
Christian Hupfer
148k14193387
asked 1 hour ago
Loïc
135
New contributor
Loïc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 24 mins ago
Christian Hupfer
148k14193387
edited 24 mins ago
Christian Hupfer
148k14193387
edited 24 mins ago
Christian Hupfer
148k14193387
148k14193387
asked 1 hour ago
Loïc
135
New contributor
Loïc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 1 hour ago
Loïc
135
asked 1 hour ago
Loïc
135
135
New contributor
Loïc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Loïc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Loïc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
@ChristianHupfer Thank you. I know but I would like to create my own macros, this is just a simple example to understand the use of conditions.
– Loïc
57 mins ago
There already existesdiffanddiffcoeffpackages which already can do that (and more: they consider the case of partial derivatives of any order). Why reinvent the wheel?
– Bernard
45 mins ago
@Bernard the OP said this was just a specific example of a more general question about writing macros.
– alephzero
41 mins ago
@Bernard I think the question of the OP goes more in the direction of 'How to create macros with conditions?' The derivative is just an example, so using a package will not help him in this case
– caverac
41 mins ago
@Bernard thank you for introducing me to these packages. Indeed, I was mainly looking to know how to use "if-conditions", the derivation was only one example.
– Loïc
38 mins ago
|
show 2 more comments
@ChristianHupfer Thank you. I know but I would like to create my own macros, this is just a simple example to understand the use of conditions.
– Loïc
57 mins ago
There already existesdiffanddiffcoeffpackages which already can do that (and more: they consider the case of partial derivatives of any order). Why reinvent the wheel?
– Bernard
45 mins ago
@Bernard the OP said this was just a specific example of a more general question about writing macros.
– alephzero
41 mins ago
@Bernard I think the question of the OP goes more in the direction of 'How to create macros with conditions?' The derivative is just an example, so using a package will not help him in this case
– caverac
41 mins ago
@Bernard thank you for introducing me to these packages. Indeed, I was mainly looking to know how to use "if-conditions", the derivation was only one example.
– Loïc
38 mins ago
@ChristianHupfer Thank you. I know but I would like to create my own macros, this is just a simple example to understand the use of conditions.
– Loïc
57 mins ago
@ChristianHupfer Thank you. I know but I would like to create my own macros, this is just a simple example to understand the use of conditions.
– Loïc
57 mins ago
There already exist
esdiff and diffcoeff packages which already can do that (and more: they consider the case of partial derivatives of any order). Why reinvent the wheel?– Bernard
45 mins ago
There already exist
esdiff and diffcoeff packages which already can do that (and more: they consider the case of partial derivatives of any order). Why reinvent the wheel?– Bernard
45 mins ago
@Bernard the OP said this was just a specific example of a more general question about writing macros.
– alephzero
41 mins ago
@Bernard the OP said this was just a specific example of a more general question about writing macros.
– alephzero
41 mins ago
@Bernard I think the question of the OP goes more in the direction of 'How to create macros with conditions?' The derivative is just an example, so using a package will not help him in this case
– caverac
41 mins ago
@Bernard I think the question of the OP goes more in the direction of 'How to create macros with conditions?' The derivative is just an example, so using a package will not help him in this case
– caverac
41 mins ago
@Bernard thank you for introducing me to these packages. Indeed, I was mainly looking to know how to use "if-conditions", the derivation was only one example.
– Loïc
38 mins ago
@Bernard thank you for introducing me to these packages. Indeed, I was mainly looking to know how to use "if-conditions", the derivation was only one example.
– Loïc
38 mins ago
|
show 2 more comments
1 Answer
1
active
oldest
votes
It's easy with xparse:
documentclass{article}
usepackage{amsmath}
usepackage{xparse}
newcommand{df}{mathop{}!d} % use mathrm{d} if you really prefer it
NewDocumentCommand{drv}{omm}{%
frac{dfIfValueT{#1}{^{#1}kern-scriptspace}#2}
{df#3IfValueT{#1}{^{#1}}}%
}
begin{document}
[
drv{f}{x}=f'(x),qquad
drv[n+1]{f}{x}=drv{}{x}drv[n]{f}{x}
]
end{document}
With o an optional argument is denoted; if it is present, IfValueT{#1} will return true and use the argument as shown.
With the given definition, df will behave as expected also in integrals, leaving a thin space before it when necessary.
answered 34 mins ago
egreg
709k8618823165
Thank you, this is perfect. I just do not understand the use ofkern-scriptspace.
– Loïc
17 mins ago
add a comment |
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "85"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Loïc is a new contributor. Be nice, and check out our Code of Conduct.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2ftex.stackexchange.com%2fquestions%2f468107%2fhow-to-add-conditions-in-latex-macros%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
It's easy with xparse:
documentclass{article}
usepackage{amsmath}
usepackage{xparse}
newcommand{df}{mathop{}!d} % use mathrm{d} if you really prefer it
NewDocumentCommand{drv}{omm}{%
frac{dfIfValueT{#1}{^{#1}kern-scriptspace}#2}
{df#3IfValueT{#1}{^{#1}}}%
}
begin{document}
[
drv{f}{x}=f'(x),qquad
drv[n+1]{f}{x}=drv{}{x}drv[n]{f}{x}
]
end{document}
With o an optional argument is denoted; if it is present, IfValueT{#1} will return true and use the argument as shown.
With the given definition, df will behave as expected also in integrals, leaving a thin space before it when necessary.
answered 34 mins ago
egreg
709k8618823165
Thank you, this is perfect. I just do not understand the use ofkern-scriptspace.
– Loïc
17 mins ago
add a comment |
It's easy with xparse:
documentclass{article}
usepackage{amsmath}
usepackage{xparse}
newcommand{df}{mathop{}!d} % use mathrm{d} if you really prefer it
NewDocumentCommand{drv}{omm}{%
frac{dfIfValueT{#1}{^{#1}kern-scriptspace}#2}
{df#3IfValueT{#1}{^{#1}}}%
}
begin{document}
[
drv{f}{x}=f'(x),qquad
drv[n+1]{f}{x}=drv{}{x}drv[n]{f}{x}
]
end{document}
With o an optional argument is denoted; if it is present, IfValueT{#1} will return true and use the argument as shown.
With the given definition, df will behave as expected also in integrals, leaving a thin space before it when necessary.
answered 34 mins ago
egreg
709k8618823165
Thank you, this is perfect. I just do not understand the use ofkern-scriptspace.
– Loïc
17 mins ago
add a comment |
It's easy with xparse:
documentclass{article}
usepackage{amsmath}
usepackage{xparse}
newcommand{df}{mathop{}!d} % use mathrm{d} if you really prefer it
NewDocumentCommand{drv}{omm}{%
frac{dfIfValueT{#1}{^{#1}kern-scriptspace}#2}
{df#3IfValueT{#1}{^{#1}}}%
}
begin{document}
[
drv{f}{x}=f'(x),qquad
drv[n+1]{f}{x}=drv{}{x}drv[n]{f}{x}
]
end{document}
With o an optional argument is denoted; if it is present, IfValueT{#1} will return true and use the argument as shown.
With the given definition, df will behave as expected also in integrals, leaving a thin space before it when necessary.
answered 34 mins ago
egreg
709k8618823165
It's easy with xparse:
documentclass{article}
usepackage{amsmath}
usepackage{xparse}
newcommand{df}{mathop{}!d} % use mathrm{d} if you really prefer it
NewDocumentCommand{drv}{omm}{%
frac{dfIfValueT{#1}{^{#1}kern-scriptspace}#2}
{df#3IfValueT{#1}{^{#1}}}%
}
begin{document}
[
drv{f}{x}=f'(x),qquad
drv[n+1]{f}{x}=drv{}{x}drv[n]{f}{x}
]
end{document}
With o an optional argument is denoted; if it is present, IfValueT{#1} will return true and use the argument as shown.
With the given definition, df will behave as expected also in integrals, leaving a thin space before it when necessary.
answered 34 mins ago
egreg
709k8618823165
answered 34 mins ago
egreg
709k8618823165
answered 34 mins ago
egreg
709k8618823165
answered 34 mins ago
egreg
709k8618823165
709k8618823165
Thank you, this is perfect. I just do not understand the use ofkern-scriptspace.
– Loïc
17 mins ago
add a comment |
Thank you, this is perfect. I just do not understand the use ofkern-scriptspace.
– Loïc
17 mins ago
Thank you, this is perfect. I just do not understand the use of
kern-scriptspace.– Loïc
17 mins ago
Thank you, this is perfect. I just do not understand the use of
kern-scriptspace.– Loïc
17 mins ago
add a comment |
Loïc is a new contributor. Be nice, and check out our Code of Conduct.
Loïc is a new contributor. Be nice, and check out our Code of Conduct.
Loïc is a new contributor. Be nice, and check out our Code of Conduct.
Loïc is a new contributor. Be nice, and check out our Code of Conduct.
Thanks for contributing an answer to TeX - LaTeX Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Some of your past answers have not been well-received, and you're in danger of being blocked from answering.
Please pay close attention to the following guidance:
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2ftex.stackexchange.com%2fquestions%2f468107%2fhow-to-add-conditions-in-latex-macros%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
@ChristianHupfer Thank you. I know but I would like to create my own macros, this is just a simple example to understand the use of conditions.
– Loïc
57 mins ago
There already exist
esdiffanddiffcoeffpackages which already can do that (and more: they consider the case of partial derivatives of any order). Why reinvent the wheel?– Bernard
45 mins ago
@Bernard the OP said this was just a specific example of a more general question about writing macros.
– alephzero
41 mins ago
@Bernard I think the question of the OP goes more in the direction of 'How to create macros with conditions?' The derivative is just an example, so using a package will not help him in this case
– caverac
41 mins ago
@Bernard thank you for introducing me to these packages. Indeed, I was mainly looking to know how to use "if-conditions", the derivation was only one example.
– Loïc
38 mins ago